diff options
Diffstat (limited to 'kernel/arch/mips/ar7')
| -rw-r--r-- | kernel/arch/mips/ar7/Makefile | 10 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/Platform | 6 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/clock.c | 475 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/gpio.c | 348 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/irq.c | 178 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/memory.c | 70 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/platform.c | 731 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/prom.c | 270 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/setup.c | 105 | ||||
| -rw-r--r-- | kernel/arch/mips/ar7/time.c | 43 |
10 files changed, 2236 insertions, 0 deletions
diff --git a/kernel/arch/mips/ar7/Makefile b/kernel/arch/mips/ar7/Makefile new file mode 100644 index 000000000..7435e44b3 --- /dev/null +++ b/kernel/arch/mips/ar7/Makefile @@ -0,0 +1,10 @@ + +obj-y := \ + prom.o \ + setup.o \ + memory.o \ + irq.o \ + time.o \ + platform.o \ + gpio.o \ + clock.o diff --git a/kernel/arch/mips/ar7/Platform b/kernel/arch/mips/ar7/Platform new file mode 100644 index 000000000..21f9102d5 --- /dev/null +++ b/kernel/arch/mips/ar7/Platform @@ -0,0 +1,6 @@ +# +# Texas Instruments AR7 +# +platform-$(CONFIG_AR7) += ar7/ +cflags-$(CONFIG_AR7) += -I$(srctree)/arch/mips/include/asm/mach-ar7 +load-$(CONFIG_AR7) += 0xffffffff94100000 diff --git a/kernel/arch/mips/ar7/clock.c b/kernel/arch/mips/ar7/clock.c new file mode 100644 index 000000000..2460f9d23 --- /dev/null +++ b/kernel/arch/mips/ar7/clock.c @@ -0,0 +1,475 @@ +/* + * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2007 Eugene Konev <ejka@openwrt.org> + * Copyright (C) 2009 Florian Fainelli <florian@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/gcd.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/clk.h> + +#include <asm/addrspace.h> +#include <asm/mach-ar7/ar7.h> + +#define BOOT_PLL_SOURCE_MASK 0x3 +#define CPU_PLL_SOURCE_SHIFT 16 +#define BUS_PLL_SOURCE_SHIFT 14 +#define USB_PLL_SOURCE_SHIFT 18 +#define DSP_PLL_SOURCE_SHIFT 22 +#define BOOT_PLL_SOURCE_AFE 0 +#define BOOT_PLL_SOURCE_BUS 0 +#define BOOT_PLL_SOURCE_REF 1 +#define BOOT_PLL_SOURCE_XTAL 2 +#define BOOT_PLL_SOURCE_CPU 3 +#define BOOT_PLL_BYPASS 0x00000020 +#define BOOT_PLL_ASYNC_MODE 0x02000000 +#define BOOT_PLL_2TO1_MODE 0x00008000 + +#define TNETD7200_CLOCK_ID_CPU 0 +#define TNETD7200_CLOCK_ID_DSP 1 +#define TNETD7200_CLOCK_ID_USB 2 + +#define TNETD7200_DEF_CPU_CLK 211000000 +#define TNETD7200_DEF_DSP_CLK 125000000 +#define TNETD7200_DEF_USB_CLK 48000000 + +struct tnetd7300_clock { + u32 ctrl; +#define PREDIV_MASK 0x001f0000 +#define PREDIV_SHIFT 16 +#define POSTDIV_MASK 0x0000001f + u32 unused1[3]; + u32 pll; +#define MUL_MASK 0x0000f000 +#define MUL_SHIFT 12 +#define PLL_MODE_MASK 0x00000001 +#define PLL_NDIV 0x00000800 +#define PLL_DIV 0x00000002 +#define PLL_STATUS 0x00000001 + u32 unused2[3]; +}; + +struct tnetd7300_clocks { + struct tnetd7300_clock bus; + struct tnetd7300_clock cpu; + struct tnetd7300_clock usb; + struct tnetd7300_clock dsp; +}; + +struct tnetd7200_clock { + u32 ctrl; + u32 unused1[3]; +#define DIVISOR_ENABLE_MASK 0x00008000 + u32 mul; + u32 prediv; + u32 postdiv; + u32 postdiv2; + u32 unused2[6]; + u32 cmd; + u32 status; + u32 cmden; + u32 padding[15]; +}; + +struct tnetd7200_clocks { + struct tnetd7200_clock cpu; + struct tnetd7200_clock dsp; + struct tnetd7200_clock usb; +}; + +static struct clk bus_clk = { + .rate = 125000000, +}; + +static struct clk cpu_clk = { + .rate = 150000000, +}; + +static struct clk dsp_clk; +static struct clk vbus_clk; + +static void approximate(int base, int target, int *prediv, + int *postdiv, int *mul) +{ + int i, j, k, freq, res = target; + for (i = 1; i <= 16; i++) + for (j = 1; j <= 32; j++) + for (k = 1; k <= 32; k++) { + freq = abs(base / j * i / k - target); + if (freq < res) { + res = freq; + *mul = i; + *prediv = j; + *postdiv = k; + } + } +} + +static void calculate(int base, int target, int *prediv, int *postdiv, + int *mul) +{ + int tmp_gcd, tmp_base, tmp_freq; + + for (*prediv = 1; *prediv <= 32; (*prediv)++) { + tmp_base = base / *prediv; + tmp_gcd = gcd(target, tmp_base); + *mul = target / tmp_gcd; + *postdiv = tmp_base / tmp_gcd; + if ((*mul < 1) || (*mul >= 16)) + continue; + if ((*postdiv > 0) & (*postdiv <= 32)) + break; + } + + if (base / *prediv * *mul / *postdiv != target) { + approximate(base, target, prediv, postdiv, mul); + tmp_freq = base / *prediv * *mul / *postdiv; + printk(KERN_WARNING + "Adjusted requested frequency %d to %d\n", + target, tmp_freq); + } + + printk(KERN_DEBUG "Clocks: prediv: %d, postdiv: %d, mul: %d\n", + *prediv, *postdiv, *mul); +} + +static int tnetd7300_dsp_clock(void) +{ + u32 didr1, didr2; + u8 rev = ar7_chip_rev(); + didr1 = readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x18)); + didr2 = readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x1c)); + if (didr2 & (1 << 23)) + return 0; + if ((rev >= 0x23) && (rev != 0x57)) + return 250000000; + if ((((didr2 & 0x1fff) << 10) | ((didr1 & 0xffc00000) >> 22)) + > 4208000) + return 250000000; + return 0; +} + +static int tnetd7300_get_clock(u32 shift, struct tnetd7300_clock *clock, + u32 *bootcr, u32 bus_clock) +{ + int product; + int base_clock = AR7_REF_CLOCK; + u32 ctrl = readl(&clock->ctrl); + u32 pll = readl(&clock->pll); + int prediv = ((ctrl & PREDIV_MASK) >> PREDIV_SHIFT) + 1; + int postdiv = (ctrl & POSTDIV_MASK) + 1; + int divisor = prediv * postdiv; + int mul = ((pll & MUL_MASK) >> MUL_SHIFT) + 1; + + switch ((*bootcr & (BOOT_PLL_SOURCE_MASK << shift)) >> shift) { + case BOOT_PLL_SOURCE_BUS: + base_clock = bus_clock; + break; + case BOOT_PLL_SOURCE_REF: + base_clock = AR7_REF_CLOCK; + break; + case BOOT_PLL_SOURCE_XTAL: + base_clock = AR7_XTAL_CLOCK; + break; + case BOOT_PLL_SOURCE_CPU: + base_clock = cpu_clk.rate; + break; + } + + if (*bootcr & BOOT_PLL_BYPASS) + return base_clock / divisor; + + if ((pll & PLL_MODE_MASK) == 0) + return (base_clock >> (mul / 16 + 1)) / divisor; + + if ((pll & (PLL_NDIV | PLL_DIV)) == (PLL_NDIV | PLL_DIV)) { + product = (mul & 1) ? + (base_clock * mul) >> 1 : + (base_clock * (mul - 1)) >> 2; + return product / divisor; + } + + if (mul == 16) + return base_clock / divisor; + + return base_clock * mul / divisor; +} + +static void tnetd7300_set_clock(u32 shift, struct tnetd7300_clock *clock, + u32 *bootcr, u32 frequency) +{ + int prediv, postdiv, mul; + int base_clock = bus_clk.rate; + + switch ((*bootcr & (BOOT_PLL_SOURCE_MASK << shift)) >> shift) { + case BOOT_PLL_SOURCE_BUS: + base_clock = bus_clk.rate; + break; + case BOOT_PLL_SOURCE_REF: + base_clock = AR7_REF_CLOCK; + break; + case BOOT_PLL_SOURCE_XTAL: + base_clock = AR7_XTAL_CLOCK; + break; + case BOOT_PLL_SOURCE_CPU: + base_clock = cpu_clk.rate; + break; + } + + calculate(base_clock, frequency, &prediv, &postdiv, &mul); + + writel(((prediv - 1) << PREDIV_SHIFT) | (postdiv - 1), &clock->ctrl); + mdelay(1); + writel(4, &clock->pll); + while (readl(&clock->pll) & PLL_STATUS) + ; + writel(((mul - 1) << MUL_SHIFT) | (0xff << 3) | 0x0e, &clock->pll); + mdelay(75); +} + +static void __init tnetd7300_init_clocks(void) +{ + u32 *bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4); + struct tnetd7300_clocks *clocks = + ioremap_nocache(UR8_REGS_CLOCKS, + sizeof(struct tnetd7300_clocks)); + + bus_clk.rate = tnetd7300_get_clock(BUS_PLL_SOURCE_SHIFT, + &clocks->bus, bootcr, AR7_AFE_CLOCK); + + if (*bootcr & BOOT_PLL_ASYNC_MODE) + cpu_clk.rate = tnetd7300_get_clock(CPU_PLL_SOURCE_SHIFT, + &clocks->cpu, bootcr, AR7_AFE_CLOCK); + else + cpu_clk.rate = bus_clk.rate; + + if (dsp_clk.rate == 250000000) + tnetd7300_set_clock(DSP_PLL_SOURCE_SHIFT, &clocks->dsp, + bootcr, dsp_clk.rate); + + iounmap(clocks); + iounmap(bootcr); +} + +static void tnetd7200_set_clock(int base, struct tnetd7200_clock *clock, + int prediv, int postdiv, int postdiv2, int mul, u32 frequency) +{ + printk(KERN_INFO + "Clocks: base = %d, frequency = %u, prediv = %d, " + "postdiv = %d, postdiv2 = %d, mul = %d\n", + base, frequency, prediv, postdiv, postdiv2, mul); + + writel(0, &clock->ctrl); + writel(DIVISOR_ENABLE_MASK | ((prediv - 1) & 0x1F), &clock->prediv); + writel((mul - 1) & 0xF, &clock->mul); + + while (readl(&clock->status) & 0x1) + ; /* nop */ + + writel(DIVISOR_ENABLE_MASK | ((postdiv - 1) & 0x1F), &clock->postdiv); + + writel(readl(&clock->cmden) | 1, &clock->cmden); + writel(readl(&clock->cmd) | 1, &clock->cmd); + + while (readl(&clock->status) & 0x1) + ; /* nop */ + + writel(DIVISOR_ENABLE_MASK | ((postdiv2 - 1) & 0x1F), &clock->postdiv2); + + writel(readl(&clock->cmden) | 1, &clock->cmden); + writel(readl(&clock->cmd) | 1, &clock->cmd); + + while (readl(&clock->status) & 0x1) + ; /* nop */ + + writel(readl(&clock->ctrl) | 1, &clock->ctrl); +} + +static int tnetd7200_get_clock_base(int clock_id, u32 *bootcr) +{ + if (*bootcr & BOOT_PLL_ASYNC_MODE) + /* Async */ + switch (clock_id) { + case TNETD7200_CLOCK_ID_DSP: + return AR7_REF_CLOCK; + default: + return AR7_AFE_CLOCK; + } + else + /* Sync */ + if (*bootcr & BOOT_PLL_2TO1_MODE) + /* 2:1 */ + switch (clock_id) { + case TNETD7200_CLOCK_ID_DSP: + return AR7_REF_CLOCK; + default: + return AR7_AFE_CLOCK; + } + else + /* 1:1 */ + return AR7_REF_CLOCK; +} + + +static void __init tnetd7200_init_clocks(void) +{ + u32 *bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4); + struct tnetd7200_clocks *clocks = + ioremap_nocache(AR7_REGS_CLOCKS, + sizeof(struct tnetd7200_clocks)); + int cpu_base, cpu_mul, cpu_prediv, cpu_postdiv; + int dsp_base, dsp_mul, dsp_prediv, dsp_postdiv; + int usb_base, usb_mul, usb_prediv, usb_postdiv; + + cpu_base = tnetd7200_get_clock_base(TNETD7200_CLOCK_ID_CPU, bootcr); + dsp_base = tnetd7200_get_clock_base(TNETD7200_CLOCK_ID_DSP, bootcr); + + if (*bootcr & BOOT_PLL_ASYNC_MODE) { + printk(KERN_INFO "Clocks: Async mode\n"); + + printk(KERN_INFO "Clocks: Setting DSP clock\n"); + calculate(dsp_base, TNETD7200_DEF_DSP_CLK, + &dsp_prediv, &dsp_postdiv, &dsp_mul); + bus_clk.rate = + ((dsp_base / dsp_prediv) * dsp_mul) / dsp_postdiv; + tnetd7200_set_clock(dsp_base, &clocks->dsp, + dsp_prediv, dsp_postdiv * 2, dsp_postdiv, dsp_mul * 2, + bus_clk.rate); + + printk(KERN_INFO "Clocks: Setting CPU clock\n"); + calculate(cpu_base, TNETD7200_DEF_CPU_CLK, &cpu_prediv, + &cpu_postdiv, &cpu_mul); + cpu_clk.rate = + ((cpu_base / cpu_prediv) * cpu_mul) / cpu_postdiv; + tnetd7200_set_clock(cpu_base, &clocks->cpu, + cpu_prediv, cpu_postdiv, -1, cpu_mul, + cpu_clk.rate); + + } else + if (*bootcr & BOOT_PLL_2TO1_MODE) { + printk(KERN_INFO "Clocks: Sync 2:1 mode\n"); + + printk(KERN_INFO "Clocks: Setting CPU clock\n"); + calculate(cpu_base, TNETD7200_DEF_CPU_CLK, &cpu_prediv, + &cpu_postdiv, &cpu_mul); + cpu_clk.rate = ((cpu_base / cpu_prediv) * cpu_mul) + / cpu_postdiv; + tnetd7200_set_clock(cpu_base, &clocks->cpu, + cpu_prediv, cpu_postdiv, -1, cpu_mul, + cpu_clk.rate); + + printk(KERN_INFO "Clocks: Setting DSP clock\n"); + calculate(dsp_base, TNETD7200_DEF_DSP_CLK, &dsp_prediv, + &dsp_postdiv, &dsp_mul); + bus_clk.rate = cpu_clk.rate / 2; + tnetd7200_set_clock(dsp_base, &clocks->dsp, + dsp_prediv, dsp_postdiv * 2, dsp_postdiv, + dsp_mul * 2, bus_clk.rate); + } else { + printk(KERN_INFO "Clocks: Sync 1:1 mode\n"); + + printk(KERN_INFO "Clocks: Setting DSP clock\n"); + calculate(dsp_base, TNETD7200_DEF_DSP_CLK, &dsp_prediv, + &dsp_postdiv, &dsp_mul); + bus_clk.rate = ((dsp_base / dsp_prediv) * dsp_mul) + / dsp_postdiv; + tnetd7200_set_clock(dsp_base, &clocks->dsp, + dsp_prediv, dsp_postdiv * 2, dsp_postdiv, + dsp_mul * 2, bus_clk.rate); + + cpu_clk.rate = bus_clk.rate; + } + + printk(KERN_INFO "Clocks: Setting USB clock\n"); + usb_base = bus_clk.rate; + calculate(usb_base, TNETD7200_DEF_USB_CLK, &usb_prediv, + &usb_postdiv, &usb_mul); + tnetd7200_set_clock(usb_base, &clocks->usb, + usb_prediv, usb_postdiv, -1, usb_mul, + TNETD7200_DEF_USB_CLK); + + dsp_clk.rate = cpu_clk.rate; + + iounmap(clocks); + iounmap(bootcr); +} + +/* + * Linux clock API + */ +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return clk->rate; +} +EXPORT_SYMBOL(clk_get_rate); + +struct clk *clk_get(struct device *dev, const char *id) +{ + if (!strcmp(id, "bus")) + return &bus_clk; + /* cpmac and vbus share the same rate */ + if (!strcmp(id, "cpmac")) + return &vbus_clk; + if (!strcmp(id, "cpu")) + return &cpu_clk; + if (!strcmp(id, "dsp")) + return &dsp_clk; + if (!strcmp(id, "vbus")) + return &vbus_clk; + return ERR_PTR(-ENOENT); +} +EXPORT_SYMBOL(clk_get); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); + +void __init ar7_init_clocks(void) +{ + switch (ar7_chip_id()) { + case AR7_CHIP_7100: + case AR7_CHIP_7200: + tnetd7200_init_clocks(); + break; + case AR7_CHIP_7300: + dsp_clk.rate = tnetd7300_dsp_clock(); + tnetd7300_init_clocks(); + break; + default: + break; + } + /* adjust vbus clock rate */ + vbus_clk.rate = bus_clk.rate / 2; +} diff --git a/kernel/arch/mips/ar7/gpio.c b/kernel/arch/mips/ar7/gpio.c new file mode 100644 index 000000000..d8dbd8f0c --- /dev/null +++ b/kernel/arch/mips/ar7/gpio.c @@ -0,0 +1,348 @@ +/* + * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2007 Eugene Konev <ejka@openwrt.org> + * Copyright (C) 2009-2010 Florian Fainelli <florian@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> +#include <linux/gpio.h> + +#include <asm/mach-ar7/gpio.h> + +struct ar7_gpio_chip { + void __iomem *regs; + struct gpio_chip chip; +}; + +static int ar7_gpio_get_value(struct gpio_chip *chip, unsigned gpio) +{ + struct ar7_gpio_chip *gpch = + container_of(chip, struct ar7_gpio_chip, chip); + void __iomem *gpio_in = gpch->regs + AR7_GPIO_INPUT; + + return readl(gpio_in) & (1 << gpio); +} + +static int titan_gpio_get_value(struct gpio_chip *chip, unsigned gpio) +{ + struct ar7_gpio_chip *gpch = + container_of(chip, struct ar7_gpio_chip, chip); + void __iomem *gpio_in0 = gpch->regs + TITAN_GPIO_INPUT_0; + void __iomem *gpio_in1 = gpch->regs + TITAN_GPIO_INPUT_1; + + return readl(gpio >> 5 ? gpio_in1 : gpio_in0) & (1 << (gpio & 0x1f)); +} + +static void ar7_gpio_set_value(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ar7_gpio_chip *gpch = + container_of(chip, struct ar7_gpio_chip, chip); + void __iomem *gpio_out = gpch->regs + AR7_GPIO_OUTPUT; + unsigned tmp; + + tmp = readl(gpio_out) & ~(1 << gpio); + if (value) + tmp |= 1 << gpio; + writel(tmp, gpio_out); +} + +static void titan_gpio_set_value(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ar7_gpio_chip *gpch = + container_of(chip, struct ar7_gpio_chip, chip); + void __iomem *gpio_out0 = gpch->regs + TITAN_GPIO_OUTPUT_0; + void __iomem *gpio_out1 = gpch->regs + TITAN_GPIO_OUTPUT_1; + unsigned tmp; + + tmp = readl(gpio >> 5 ? gpio_out1 : gpio_out0) & ~(1 << (gpio & 0x1f)); + if (value) + tmp |= 1 << (gpio & 0x1f); + writel(tmp, gpio >> 5 ? gpio_out1 : gpio_out0); +} + +static int ar7_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + struct ar7_gpio_chip *gpch = + container_of(chip, struct ar7_gpio_chip, chip); + void __iomem *gpio_dir = gpch->regs + AR7_GPIO_DIR; + + writel(readl(gpio_dir) | (1 << gpio), gpio_dir); + + return 0; +} + +static int titan_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + struct ar7_gpio_chip *gpch = + container_of(chip, struct ar7_gpio_chip, chip); + void __iomem *gpio_dir0 = gpch->regs + TITAN_GPIO_DIR_0; + void __iomem *gpio_dir1 = gpch->regs + TITAN_GPIO_DIR_1; + + if (gpio >= TITAN_GPIO_MAX) + return -EINVAL; + + writel(readl(gpio >> 5 ? gpio_dir1 : gpio_dir0) | (1 << (gpio & 0x1f)), + gpio >> 5 ? gpio_dir1 : gpio_dir0); + return 0; +} + +static int ar7_gpio_direction_output(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ar7_gpio_chip *gpch = + container_of(chip, struct ar7_gpio_chip, chip); + void __iomem *gpio_dir = gpch->regs + AR7_GPIO_DIR; + + ar7_gpio_set_value(chip, gpio, value); + writel(readl(gpio_dir) & ~(1 << gpio), gpio_dir); + + return 0; +} + +static int titan_gpio_direction_output(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ar7_gpio_chip *gpch = + container_of(chip, struct ar7_gpio_chip, chip); + void __iomem *gpio_dir0 = gpch->regs + TITAN_GPIO_DIR_0; + void __iomem *gpio_dir1 = gpch->regs + TITAN_GPIO_DIR_1; + + if (gpio >= TITAN_GPIO_MAX) + return -EINVAL; + + titan_gpio_set_value(chip, gpio, value); + writel(readl(gpio >> 5 ? gpio_dir1 : gpio_dir0) & ~(1 << + (gpio & 0x1f)), gpio >> 5 ? gpio_dir1 : gpio_dir0); + + return 0; +} + +static struct ar7_gpio_chip ar7_gpio_chip = { + .chip = { + .label = "ar7-gpio", + .direction_input = ar7_gpio_direction_input, + .direction_output = ar7_gpio_direction_output, + .set = ar7_gpio_set_value, + .get = ar7_gpio_get_value, + .base = 0, + .ngpio = AR7_GPIO_MAX, + } +}; + +static struct ar7_gpio_chip titan_gpio_chip = { + .chip = { + .label = "titan-gpio", + .direction_input = titan_gpio_direction_input, + .direction_output = titan_gpio_direction_output, + .set = titan_gpio_set_value, + .get = titan_gpio_get_value, + .base = 0, + .ngpio = TITAN_GPIO_MAX, + } +}; + +static inline int ar7_gpio_enable_ar7(unsigned gpio) +{ + void __iomem *gpio_en = ar7_gpio_chip.regs + AR7_GPIO_ENABLE; + + writel(readl(gpio_en) | (1 << gpio), gpio_en); + + return 0; +} + +static inline int ar7_gpio_enable_titan(unsigned gpio) +{ + void __iomem *gpio_en0 = titan_gpio_chip.regs + TITAN_GPIO_ENBL_0; + void __iomem *gpio_en1 = titan_gpio_chip.regs + TITAN_GPIO_ENBL_1; + + writel(readl(gpio >> 5 ? gpio_en1 : gpio_en0) | (1 << (gpio & 0x1f)), + gpio >> 5 ? gpio_en1 : gpio_en0); + + return 0; +} + +int ar7_gpio_enable(unsigned gpio) +{ + return ar7_is_titan() ? ar7_gpio_enable_titan(gpio) : + ar7_gpio_enable_ar7(gpio); +} +EXPORT_SYMBOL(ar7_gpio_enable); + +static inline int ar7_gpio_disable_ar7(unsigned gpio) +{ + void __iomem *gpio_en = ar7_gpio_chip.regs + AR7_GPIO_ENABLE; + + writel(readl(gpio_en) & ~(1 << gpio), gpio_en); + + return 0; +} + +static inline int ar7_gpio_disable_titan(unsigned gpio) +{ + void __iomem *gpio_en0 = titan_gpio_chip.regs + TITAN_GPIO_ENBL_0; + void __iomem *gpio_en1 = titan_gpio_chip.regs + TITAN_GPIO_ENBL_1; + + writel(readl(gpio >> 5 ? gpio_en1 : gpio_en0) & ~(1 << (gpio & 0x1f)), + gpio >> 5 ? gpio_en1 : gpio_en0); + + return 0; +} + +int ar7_gpio_disable(unsigned gpio) +{ + return ar7_is_titan() ? ar7_gpio_disable_titan(gpio) : + ar7_gpio_disable_ar7(gpio); +} +EXPORT_SYMBOL(ar7_gpio_disable); + +struct titan_gpio_cfg { + u32 reg; + u32 shift; + u32 func; +}; + +static const struct titan_gpio_cfg titan_gpio_table[] = { + /* reg, start bit, mux value */ + {4, 24, 1}, + {4, 26, 1}, + {4, 28, 1}, + {4, 30, 1}, + {5, 6, 1}, + {5, 8, 1}, + {5, 10, 1}, + {5, 12, 1}, + {7, 14, 3}, + {7, 16, 3}, + {7, 18, 3}, + {7, 20, 3}, + {7, 22, 3}, + {7, 26, 3}, + {7, 28, 3}, + {7, 30, 3}, + {8, 0, 3}, + {8, 2, 3}, + {8, 4, 3}, + {8, 10, 3}, + {8, 14, 3}, + {8, 16, 3}, + {8, 18, 3}, + {8, 20, 3}, + {9, 8, 3}, + {9, 10, 3}, + {9, 12, 3}, + {9, 14, 3}, + {9, 18, 3}, + {9, 20, 3}, + {9, 24, 3}, + {9, 26, 3}, + {9, 28, 3}, + {9, 30, 3}, + {10, 0, 3}, + {10, 2, 3}, + {10, 8, 3}, + {10, 10, 3}, + {10, 12, 3}, + {10, 14, 3}, + {13, 12, 3}, + {13, 14, 3}, + {13, 16, 3}, + {13, 18, 3}, + {13, 24, 3}, + {13, 26, 3}, + {13, 28, 3}, + {13, 30, 3}, + {14, 2, 3}, + {14, 6, 3}, + {14, 8, 3}, + {14, 12, 3} +}; + +static int titan_gpio_pinsel(unsigned gpio) +{ + struct titan_gpio_cfg gpio_cfg; + u32 mux_status, pin_sel_reg, tmp; + void __iomem *pin_sel = (void __iomem *)KSEG1ADDR(AR7_REGS_PINSEL); + + if (gpio >= ARRAY_SIZE(titan_gpio_table)) + return -EINVAL; + + gpio_cfg = titan_gpio_table[gpio]; + pin_sel_reg = gpio_cfg.reg - 1; + + mux_status = (readl(pin_sel + pin_sel_reg) >> gpio_cfg.shift) & 0x3; + + /* Check the mux status */ + if (!((mux_status == 0) || (mux_status == gpio_cfg.func))) + return 0; + + /* Set the pin sel value */ + tmp = readl(pin_sel + pin_sel_reg); + tmp |= ((gpio_cfg.func & 0x3) << gpio_cfg.shift); + writel(tmp, pin_sel + pin_sel_reg); + + return 0; +} + +/* Perform minimal Titan GPIO configuration */ +static void titan_gpio_init(void) +{ + unsigned i; + + for (i = 44; i < 48; i++) { + titan_gpio_pinsel(i); + ar7_gpio_enable_titan(i); + titan_gpio_direction_input(&titan_gpio_chip.chip, i); + } +} + +int __init ar7_gpio_init(void) +{ + int ret; + struct ar7_gpio_chip *gpch; + unsigned size; + + if (!ar7_is_titan()) { + gpch = &ar7_gpio_chip; + size = 0x10; + } else { + gpch = &titan_gpio_chip; + size = 0x1f; + } + + gpch->regs = ioremap_nocache(AR7_REGS_GPIO, size); + if (!gpch->regs) { + printk(KERN_ERR "%s: failed to ioremap regs\n", + gpch->chip.label); + return -ENOMEM; + } + + ret = gpiochip_add(&gpch->chip); + if (ret) { + printk(KERN_ERR "%s: failed to add gpiochip\n", + gpch->chip.label); + return ret; + } + printk(KERN_INFO "%s: registered %d GPIOs\n", + gpch->chip.label, gpch->chip.ngpio); + + if (ar7_is_titan()) + titan_gpio_init(); + + return ret; +} diff --git a/kernel/arch/mips/ar7/irq.c b/kernel/arch/mips/ar7/irq.c new file mode 100644 index 000000000..88c4babfd --- /dev/null +++ b/kernel/arch/mips/ar7/irq.c @@ -0,0 +1,178 @@ +/* + * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/irq.h> + +#include <asm/irq_cpu.h> +#include <asm/mipsregs.h> +#include <asm/mach-ar7/ar7.h> + +#define EXCEPT_OFFSET 0x80 +#define PACE_OFFSET 0xA0 +#define CHNLS_OFFSET 0x200 + +#define REG_OFFSET(irq, reg) ((irq) / 32 * 0x4 + reg * 0x10) +#define SEC_REG_OFFSET(reg) (EXCEPT_OFFSET + reg * 0x8) +#define SEC_SR_OFFSET (SEC_REG_OFFSET(0)) /* 0x80 */ +#define CR_OFFSET(irq) (REG_OFFSET(irq, 1)) /* 0x10 */ +#define SEC_CR_OFFSET (SEC_REG_OFFSET(1)) /* 0x88 */ +#define ESR_OFFSET(irq) (REG_OFFSET(irq, 2)) /* 0x20 */ +#define SEC_ESR_OFFSET (SEC_REG_OFFSET(2)) /* 0x90 */ +#define ECR_OFFSET(irq) (REG_OFFSET(irq, 3)) /* 0x30 */ +#define SEC_ECR_OFFSET (SEC_REG_OFFSET(3)) /* 0x98 */ +#define PIR_OFFSET (0x40) +#define MSR_OFFSET (0x44) +#define PM_OFFSET(irq) (REG_OFFSET(irq, 5)) /* 0x50 */ +#define TM_OFFSET(irq) (REG_OFFSET(irq, 6)) /* 0x60 */ + +#define REG(addr) ((u32 *)(KSEG1ADDR(AR7_REGS_IRQ) + addr)) + +#define CHNL_OFFSET(chnl) (CHNLS_OFFSET + (chnl * 4)) + +static int ar7_irq_base; + +static void ar7_unmask_irq(struct irq_data *d) +{ + writel(1 << ((d->irq - ar7_irq_base) % 32), + REG(ESR_OFFSET(d->irq - ar7_irq_base))); +} + +static void ar7_mask_irq(struct irq_data *d) +{ + writel(1 << ((d->irq - ar7_irq_base) % 32), + REG(ECR_OFFSET(d->irq - ar7_irq_base))); +} + +static void ar7_ack_irq(struct irq_data *d) +{ + writel(1 << ((d->irq - ar7_irq_base) % 32), + REG(CR_OFFSET(d->irq - ar7_irq_base))); +} + +static void ar7_unmask_sec_irq(struct irq_data *d) +{ + writel(1 << (d->irq - ar7_irq_base - 40), REG(SEC_ESR_OFFSET)); +} + +static void ar7_mask_sec_irq(struct irq_data *d) +{ + writel(1 << (d->irq - ar7_irq_base - 40), REG(SEC_ECR_OFFSET)); +} + +static void ar7_ack_sec_irq(struct irq_data *d) +{ + writel(1 << (d->irq - ar7_irq_base - 40), REG(SEC_CR_OFFSET)); +} + +static struct irq_chip ar7_irq_type = { + .name = "AR7", + .irq_unmask = ar7_unmask_irq, + .irq_mask = ar7_mask_irq, + .irq_ack = ar7_ack_irq +}; + +static struct irq_chip ar7_sec_irq_type = { + .name = "AR7", + .irq_unmask = ar7_unmask_sec_irq, + .irq_mask = ar7_mask_sec_irq, + .irq_ack = ar7_ack_sec_irq, +}; + +static struct irqaction ar7_cascade_action = { + .handler = no_action, + .name = "AR7 cascade interrupt", + .flags = IRQF_NO_THREAD, +}; + +static void __init ar7_irq_init(int base) +{ + int i; + /* + * Disable interrupts and clear pending + */ + writel(0xffffffff, REG(ECR_OFFSET(0))); + writel(0xff, REG(ECR_OFFSET(32))); + writel(0xffffffff, REG(SEC_ECR_OFFSET)); + writel(0xffffffff, REG(CR_OFFSET(0))); + writel(0xff, REG(CR_OFFSET(32))); + writel(0xffffffff, REG(SEC_CR_OFFSET)); + + ar7_irq_base = base; + + for (i = 0; i < 40; i++) { + writel(i, REG(CHNL_OFFSET(i))); + /* Primary IRQ's */ + irq_set_chip_and_handler(base + i, &ar7_irq_type, + handle_level_irq); + /* Secondary IRQ's */ + if (i < 32) + irq_set_chip_and_handler(base + i + 40, + &ar7_sec_irq_type, + handle_level_irq); + } + + setup_irq(2, &ar7_cascade_action); + setup_irq(ar7_irq_base, &ar7_cascade_action); + set_c0_status(IE_IRQ0); +} + +void __init arch_init_irq(void) +{ + mips_cpu_irq_init(); + ar7_irq_init(8); +} + +static void ar7_cascade(void) +{ + u32 status; + int i, irq; + + /* Primary IRQ's */ + irq = readl(REG(PIR_OFFSET)) & 0x3f; + if (irq) { + do_IRQ(ar7_irq_base + irq); + return; + } + + /* Secondary IRQ's are cascaded through primary '0' */ + writel(1, REG(CR_OFFSET(irq))); + status = readl(REG(SEC_SR_OFFSET)); + for (i = 0; i < 32; i++) { + if (status & 1) { + do_IRQ(ar7_irq_base + i + 40); + return; + } + status >>= 1; + } + + spurious_interrupt(); +} + +asmlinkage void plat_irq_dispatch(void) +{ + unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; + if (pending & STATUSF_IP7) /* cpu timer */ + do_IRQ(7); + else if (pending & STATUSF_IP2) /* int0 hardware line */ + ar7_cascade(); + else + spurious_interrupt(); +} diff --git a/kernel/arch/mips/ar7/memory.c b/kernel/arch/mips/ar7/memory.c new file mode 100644 index 000000000..92dfa4812 --- /dev/null +++ b/kernel/arch/mips/ar7/memory.c @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2007 Eugene Konev <ejka@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/bootmem.h> +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/pfn.h> +#include <linux/proc_fs.h> +#include <linux/string.h> +#include <linux/swap.h> + +#include <asm/bootinfo.h> +#include <asm/page.h> +#include <asm/sections.h> + +#include <asm/mach-ar7/ar7.h> + +static int __init memsize(void) +{ + u32 size = (64 << 20); + u32 *addr = (u32 *)KSEG1ADDR(AR7_SDRAM_BASE + size - 4); + u32 *kernel_end = (u32 *)KSEG1ADDR(CPHYSADDR((u32)&_end)); + u32 *tmpaddr = addr; + + while (tmpaddr > kernel_end) { + *tmpaddr = (u32)tmpaddr; + size >>= 1; + tmpaddr -= size >> 2; + } + + do { + tmpaddr += size >> 2; + if (*tmpaddr != (u32)tmpaddr) + break; + size <<= 1; + } while (size < (64 << 20)); + + writel((u32)tmpaddr, &addr); + + return size; +} + +void __init prom_meminit(void) +{ + unsigned long pages; + + pages = memsize() >> PAGE_SHIFT; + add_memory_region(PHYS_OFFSET, pages << PAGE_SHIFT, BOOT_MEM_RAM); +} + +void __init prom_free_prom_memory(void) +{ + /* Nothing to free */ +} diff --git a/kernel/arch/mips/ar7/platform.c b/kernel/arch/mips/ar7/platform.c new file mode 100644 index 000000000..be9ff1673 --- /dev/null +++ b/kernel/arch/mips/ar7/platform.c @@ -0,0 +1,731 @@ +/* + * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/init.h> +#include <linux/types.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/platform_device.h> +#include <linux/mtd/physmap.h> +#include <linux/serial.h> +#include <linux/serial_8250.h> +#include <linux/ioport.h> +#include <linux/io.h> +#include <linux/vlynq.h> +#include <linux/leds.h> +#include <linux/string.h> +#include <linux/etherdevice.h> +#include <linux/phy.h> +#include <linux/phy_fixed.h> +#include <linux/gpio.h> +#include <linux/clk.h> + +#include <asm/addrspace.h> +#include <asm/mach-ar7/ar7.h> +#include <asm/mach-ar7/gpio.h> +#include <asm/mach-ar7/prom.h> + +/***************************************************************************** + * VLYNQ Bus + ****************************************************************************/ +struct plat_vlynq_data { + struct plat_vlynq_ops ops; + int gpio_bit; + int reset_bit; +}; + +static int vlynq_on(struct vlynq_device *dev) +{ + int ret; + struct plat_vlynq_data *pdata = dev->dev.platform_data; + + ret = gpio_request(pdata->gpio_bit, "vlynq"); + if (ret) + goto out; + + ar7_device_reset(pdata->reset_bit); + + ret = ar7_gpio_disable(pdata->gpio_bit); + if (ret) + goto out_enabled; + + ret = ar7_gpio_enable(pdata->gpio_bit); + if (ret) + goto out_enabled; + + ret = gpio_direction_output(pdata->gpio_bit, 0); + if (ret) + goto out_gpio_enabled; + + msleep(50); + + gpio_set_value(pdata->gpio_bit, 1); + + msleep(50); + + return 0; + +out_gpio_enabled: + ar7_gpio_disable(pdata->gpio_bit); +out_enabled: + ar7_device_disable(pdata->reset_bit); + gpio_free(pdata->gpio_bit); +out: + return ret; +} + +static void vlynq_off(struct vlynq_device *dev) +{ + struct plat_vlynq_data *pdata = dev->dev.platform_data; + + ar7_gpio_disable(pdata->gpio_bit); + gpio_free(pdata->gpio_bit); + ar7_device_disable(pdata->reset_bit); +} + +static struct resource vlynq_low_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_VLYNQ0, + .end = AR7_REGS_VLYNQ0 + 0xff, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 29, + .end = 29, + }, + { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x04000000, + .end = 0x04ffffff, + }, + { + .name = "devirq", + .flags = IORESOURCE_IRQ, + .start = 80, + .end = 111, + }, +}; + +static struct resource vlynq_high_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_VLYNQ1, + .end = AR7_REGS_VLYNQ1 + 0xff, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 33, + .end = 33, + }, + { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x0c000000, + .end = 0x0cffffff, + }, + { + .name = "devirq", + .flags = IORESOURCE_IRQ, + .start = 112, + .end = 143, + }, +}; + +static struct plat_vlynq_data vlynq_low_data = { + .ops = { + .on = vlynq_on, + .off = vlynq_off, + }, + .reset_bit = 20, + .gpio_bit = 18, +}; + +static struct plat_vlynq_data vlynq_high_data = { + .ops = { + .on = vlynq_on, + .off = vlynq_off, + }, + .reset_bit = 16, + .gpio_bit = 19, +}; + +static struct platform_device vlynq_low = { + .id = 0, + .name = "vlynq", + .dev = { + .platform_data = &vlynq_low_data, + }, + .resource = vlynq_low_res, + .num_resources = ARRAY_SIZE(vlynq_low_res), +}; + +static struct platform_device vlynq_high = { + .id = 1, + .name = "vlynq", + .dev = { + .platform_data = &vlynq_high_data, + }, + .resource = vlynq_high_res, + .num_resources = ARRAY_SIZE(vlynq_high_res), +}; + +/***************************************************************************** + * Flash + ****************************************************************************/ +static struct resource physmap_flash_resource = { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x10000000, + .end = 0x107fffff, +}; + +static const char *ar7_probe_types[] = { "ar7part", NULL }; + +static struct physmap_flash_data physmap_flash_data = { + .width = 2, + .part_probe_types = ar7_probe_types, +}; + +static struct platform_device physmap_flash = { + .name = "physmap-flash", + .dev = { + .platform_data = &physmap_flash_data, + }, + .resource = &physmap_flash_resource, + .num_resources = 1, +}; + +/***************************************************************************** + * Ethernet + ****************************************************************************/ +static struct resource cpmac_low_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_MAC0, + .end = AR7_REGS_MAC0 + 0x7ff, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 27, + .end = 27, + }, +}; + +static struct resource cpmac_high_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_MAC1, + .end = AR7_REGS_MAC1 + 0x7ff, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 41, + .end = 41, + }, +}; + +static struct fixed_phy_status fixed_phy_status __initdata = { + .link = 1, + .speed = 100, + .duplex = 1, +}; + +static struct plat_cpmac_data cpmac_low_data = { + .reset_bit = 17, + .power_bit = 20, + .phy_mask = 0x80000000, +}; + +static struct plat_cpmac_data cpmac_high_data = { + .reset_bit = 21, + .power_bit = 22, + .phy_mask = 0x7fffffff, +}; + +static u64 cpmac_dma_mask = DMA_BIT_MASK(32); + +static struct platform_device cpmac_low = { + .id = 0, + .name = "cpmac", + .dev = { + .dma_mask = &cpmac_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &cpmac_low_data, + }, + .resource = cpmac_low_res, + .num_resources = ARRAY_SIZE(cpmac_low_res), +}; + +static struct platform_device cpmac_high = { + .id = 1, + .name = "cpmac", + .dev = { + .dma_mask = &cpmac_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &cpmac_high_data, + }, + .resource = cpmac_high_res, + .num_resources = ARRAY_SIZE(cpmac_high_res), +}; + +static void __init cpmac_get_mac(int instance, unsigned char *dev_addr) +{ + char name[5], *mac; + + sprintf(name, "mac%c", 'a' + instance); + mac = prom_getenv(name); + if (!mac && instance) { + sprintf(name, "mac%c", 'a'); + mac = prom_getenv(name); + } + + if (mac) { + if (!mac_pton(mac, dev_addr)) { + pr_warn("cannot parse mac address, using random address\n"); + eth_random_addr(dev_addr); + } + } else + eth_random_addr(dev_addr); +} + +/***************************************************************************** + * USB + ****************************************************************************/ +static struct resource usb_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_USB, + .end = AR7_REGS_USB + 0xff, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 32, + .end = 32, + }, + { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x03400000, + .end = 0x03401fff, + }, +}; + +static struct platform_device ar7_udc = { + .name = "ar7_udc", + .resource = usb_res, + .num_resources = ARRAY_SIZE(usb_res), +}; + +/***************************************************************************** + * LEDs + ****************************************************************************/ +static struct gpio_led default_leds[] = { + { + .name = "status", + .gpio = 8, + .active_low = 1, + }, +}; + +static struct gpio_led titan_leds[] = { + { .name = "status", .gpio = 8, .active_low = 1, }, + { .name = "wifi", .gpio = 13, .active_low = 1, }, +}; + +static struct gpio_led dsl502t_leds[] = { + { + .name = "status", + .gpio = 9, + .active_low = 1, + }, + { + .name = "ethernet", + .gpio = 7, + .active_low = 1, + }, + { + .name = "usb", + .gpio = 12, + .active_low = 1, + }, +}; + +static struct gpio_led dg834g_leds[] = { + { + .name = "ppp", + .gpio = 6, + .active_low = 1, + }, + { + .name = "status", + .gpio = 7, + .active_low = 1, + }, + { + .name = "adsl", + .gpio = 8, + .active_low = 1, + }, + { + .name = "wifi", + .gpio = 12, + .active_low = 1, + }, + { + .name = "power", + .gpio = 14, + .active_low = 1, + .default_trigger = "default-on", + }, +}; + +static struct gpio_led fb_sl_leds[] = { + { + .name = "1", + .gpio = 7, + }, + { + .name = "2", + .gpio = 13, + .active_low = 1, + }, + { + .name = "3", + .gpio = 10, + .active_low = 1, + }, + { + .name = "4", + .gpio = 12, + .active_low = 1, + }, + { + .name = "5", + .gpio = 9, + .active_low = 1, + }, +}; + +static struct gpio_led fb_fon_leds[] = { + { + .name = "1", + .gpio = 8, + }, + { + .name = "2", + .gpio = 3, + .active_low = 1, + }, + { + .name = "3", + .gpio = 5, + }, + { + .name = "4", + .gpio = 4, + .active_low = 1, + }, + { + .name = "5", + .gpio = 11, + .active_low = 1, + }, +}; + +static struct gpio_led gt701_leds[] = { + { + .name = "inet:green", + .gpio = 13, + .active_low = 1, + }, + { + .name = "usb", + .gpio = 12, + .active_low = 1, + }, + { + .name = "inet:red", + .gpio = 9, + .active_low = 1, + }, + { + .name = "power:red", + .gpio = 7, + .active_low = 1, + }, + { + .name = "power:green", + .gpio = 8, + .active_low = 1, + .default_trigger = "default-on", + }, + { + .name = "ethernet", + .gpio = 10, + .active_low = 1, + }, +}; + +static struct gpio_led_platform_data ar7_led_data; + +static struct platform_device ar7_gpio_leds = { + .name = "leds-gpio", + .dev = { + .platform_data = &ar7_led_data, + } +}; + +static void __init detect_leds(void) +{ + char *prid, *usb_prod; + + /* Default LEDs */ + ar7_led_data.num_leds = ARRAY_SIZE(default_leds); + ar7_led_data.leds = default_leds; + + /* FIXME: the whole thing is unreliable */ + prid = prom_getenv("ProductID"); + usb_prod = prom_getenv("usb_prod"); + + /* If we can't get the product id from PROM, use the default LEDs */ + if (!prid) + return; + + if (strstr(prid, "Fritz_Box_FON")) { + ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds); + ar7_led_data.leds = fb_fon_leds; + } else if (strstr(prid, "Fritz_Box_")) { + ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds); + ar7_led_data.leds = fb_sl_leds; + } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB")) + && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) { + ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds); + ar7_led_data.leds = dsl502t_leds; + } else if (strstr(prid, "DG834")) { + ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds); + ar7_led_data.leds = dg834g_leds; + } else if (strstr(prid, "CYWM") || strstr(prid, "CYWL")) { + ar7_led_data.num_leds = ARRAY_SIZE(titan_leds); + ar7_led_data.leds = titan_leds; + } else if (strstr(prid, "GT701")) { + ar7_led_data.num_leds = ARRAY_SIZE(gt701_leds); + ar7_led_data.leds = gt701_leds; + } +} + +/***************************************************************************** + * Watchdog + ****************************************************************************/ +static struct resource ar7_wdt_res = { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = -1, /* Filled at runtime */ + .end = -1, /* Filled at runtime */ +}; + +static struct platform_device ar7_wdt = { + .name = "ar7_wdt", + .resource = &ar7_wdt_res, + .num_resources = 1, +}; + +/***************************************************************************** + * Init + ****************************************************************************/ +static int __init ar7_register_uarts(void) +{ +#ifdef CONFIG_SERIAL_8250 + static struct uart_port uart_port __initdata; + struct clk *bus_clk; + int res; + + memset(&uart_port, 0, sizeof(struct uart_port)); + + bus_clk = clk_get(NULL, "bus"); + if (IS_ERR(bus_clk)) + panic("unable to get bus clk"); + + uart_port.type = PORT_AR7; + uart_port.uartclk = clk_get_rate(bus_clk) / 2; + uart_port.iotype = UPIO_MEM32; + uart_port.regshift = 2; + + uart_port.line = 0; + uart_port.irq = AR7_IRQ_UART0; + uart_port.mapbase = AR7_REGS_UART0; + uart_port.membase = ioremap(uart_port.mapbase, 256); + + res = early_serial_setup(&uart_port); + if (res) + return res; + + /* Only TNETD73xx have a second serial port */ + if (ar7_has_second_uart()) { + uart_port.line = 1; + uart_port.irq = AR7_IRQ_UART1; + uart_port.mapbase = UR8_REGS_UART1; + uart_port.membase = ioremap(uart_port.mapbase, 256); + + res = early_serial_setup(&uart_port); + if (res) + return res; + } +#endif + + return 0; +} + +static void __init titan_fixup_devices(void) +{ + /* Set vlynq0 data */ + vlynq_low_data.reset_bit = 15; + vlynq_low_data.gpio_bit = 14; + + /* Set vlynq1 data */ + vlynq_high_data.reset_bit = 16; + vlynq_high_data.gpio_bit = 7; + + /* Set vlynq0 resources */ + vlynq_low_res[0].start = TITAN_REGS_VLYNQ0; + vlynq_low_res[0].end = TITAN_REGS_VLYNQ0 + 0xff; + vlynq_low_res[1].start = 33; + vlynq_low_res[1].end = 33; + vlynq_low_res[2].start = 0x0c000000; + vlynq_low_res[2].end = 0x0fffffff; + vlynq_low_res[3].start = 80; + vlynq_low_res[3].end = 111; + + /* Set vlynq1 resources */ + vlynq_high_res[0].start = TITAN_REGS_VLYNQ1; + vlynq_high_res[0].end = TITAN_REGS_VLYNQ1 + 0xff; + vlynq_high_res[1].start = 34; + vlynq_high_res[1].end = 34; + vlynq_high_res[2].start = 0x40000000; + vlynq_high_res[2].end = 0x43ffffff; + vlynq_high_res[3].start = 112; + vlynq_high_res[3].end = 143; + + /* Set cpmac0 data */ + cpmac_low_data.phy_mask = 0x40000000; + + /* Set cpmac1 data */ + cpmac_high_data.phy_mask = 0x80000000; + + /* Set cpmac0 resources */ + cpmac_low_res[0].start = TITAN_REGS_MAC0; + cpmac_low_res[0].end = TITAN_REGS_MAC0 + 0x7ff; + + /* Set cpmac1 resources */ + cpmac_high_res[0].start = TITAN_REGS_MAC1; + cpmac_high_res[0].end = TITAN_REGS_MAC1 + 0x7ff; +} + +static int __init ar7_register_devices(void) +{ + void __iomem *bootcr; + u32 val; + int res; + + res = ar7_register_uarts(); + if (res) + pr_err("unable to setup uart(s): %d\n", res); + + res = platform_device_register(&physmap_flash); + if (res) + pr_warn("unable to register physmap-flash: %d\n", res); + + if (ar7_is_titan()) + titan_fixup_devices(); + + ar7_device_disable(vlynq_low_data.reset_bit); + res = platform_device_register(&vlynq_low); + if (res) + pr_warn("unable to register vlynq-low: %d\n", res); + + if (ar7_has_high_vlynq()) { + ar7_device_disable(vlynq_high_data.reset_bit); + res = platform_device_register(&vlynq_high); + if (res) + pr_warn("unable to register vlynq-high: %d\n", res); + } + + if (ar7_has_high_cpmac()) { + res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status); + if (!res) { + cpmac_get_mac(1, cpmac_high_data.dev_addr); + + res = platform_device_register(&cpmac_high); + if (res) + pr_warn("unable to register cpmac-high: %d\n", + res); + } else + pr_warn("unable to add cpmac-high phy: %d\n", res); + } else + cpmac_low_data.phy_mask = 0xffffffff; + + res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status); + if (!res) { + cpmac_get_mac(0, cpmac_low_data.dev_addr); + res = platform_device_register(&cpmac_low); + if (res) + pr_warn("unable to register cpmac-low: %d\n", res); + } else + pr_warn("unable to add cpmac-low phy: %d\n", res); + + detect_leds(); + res = platform_device_register(&ar7_gpio_leds); + if (res) + pr_warn("unable to register leds: %d\n", res); + + res = platform_device_register(&ar7_udc); + if (res) + pr_warn("unable to register usb slave: %d\n", res); + + /* Register watchdog only if enabled in hardware */ + bootcr = ioremap_nocache(AR7_REGS_DCL, 4); + val = readl(bootcr); + iounmap(bootcr); + if (val & AR7_WDT_HW_ENA) { + if (ar7_has_high_vlynq()) + ar7_wdt_res.start = UR8_REGS_WDT; + else + ar7_wdt_res.start = AR7_REGS_WDT; + + ar7_wdt_res.end = ar7_wdt_res.start + 0x20; + res = platform_device_register(&ar7_wdt); + if (res) + pr_warn("unable to register watchdog: %d\n", res); + } + + return 0; +} +device_initcall(ar7_register_devices); diff --git a/kernel/arch/mips/ar7/prom.c b/kernel/arch/mips/ar7/prom.c new file mode 100644 index 000000000..a23adc49d --- /dev/null +++ b/kernel/arch/mips/ar7/prom.c @@ -0,0 +1,270 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Putting things on the screen/serial line using YAMONs facilities. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/serial_reg.h> +#include <linux/spinlock.h> +#include <linux/module.h> +#include <linux/string.h> +#include <linux/io.h> +#include <asm/bootinfo.h> + +#include <asm/mach-ar7/ar7.h> +#include <asm/mach-ar7/prom.h> + +#define MAX_ENTRY 80 + +struct env_var { + char *name; + char *value; +}; + +static struct env_var adam2_env[MAX_ENTRY]; + +char *prom_getenv(const char *name) +{ + int i; + + for (i = 0; (i < MAX_ENTRY) && adam2_env[i].name; i++) + if (!strcmp(name, adam2_env[i].name)) + return adam2_env[i].value; + + return NULL; +} +EXPORT_SYMBOL(prom_getenv); + +static void __init ar7_init_cmdline(int argc, char *argv[]) +{ + int i; + + for (i = 1; i < argc; i++) { + strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE); + if (i < (argc - 1)) + strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); + } +} + +struct psbl_rec { + u32 psbl_size; + u32 env_base; + u32 env_size; + u32 ffs_base; + u32 ffs_size; +}; + +static const char psp_env_version[] __initconst = "TIENV0.8"; + +struct psp_env_chunk { + u8 num; + u8 ctrl; + u16 csum; + u8 len; + char data[11]; +} __packed; + +struct psp_var_map_entry { + u8 num; + char *value; +}; + +static const struct psp_var_map_entry psp_var_map[] = { + { 1, "cpufrequency" }, + { 2, "memsize" }, + { 3, "flashsize" }, + { 4, "modetty0" }, + { 5, "modetty1" }, + { 8, "maca" }, + { 9, "macb" }, + { 28, "sysfrequency" }, + { 38, "mipsfrequency" }, +}; + +/* + +Well-known variable (num is looked up in table above for matching variable name) +Example: cpufrequency=211968000 ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- +| 01 |CTRL|CHECKSUM | 01 | _2 | _1 | _1 | _9 | _6 | _8 | _0 | _0 | _0 | \0 | FF ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- + +Name=Value pair in a single chunk +Example: NAME=VALUE ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- +| 00 |CTRL|CHECKSUM | 01 | _N | _A | _M | _E | _0 | _V | _A | _L | _U | _E | \0 ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- + +Name=Value pair in 2 chunks (len is the number of chunks) +Example: bootloaderVersion=1.3.7.15 ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- +| 00 |CTRL|CHECKSUM | 02 | _b | _o | _o | _t | _l | _o | _a | _d | _e | _r | _V ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- +| _e | _r | _s | _i | _o | _n | \0 | _1 | _. | _3 | _. | _7 | _. | _1 | _5 | \0 ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- + +Data is padded with 0xFF + +*/ + +#define PSP_ENV_SIZE 4096 + +static char psp_env_data[PSP_ENV_SIZE] = { 0, }; + +static char * __init lookup_psp_var_map(u8 num) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(psp_var_map); i++) + if (psp_var_map[i].num == num) + return psp_var_map[i].value; + + return NULL; +} + +static void __init add_adam2_var(char *name, char *value) +{ + int i; + + for (i = 0; i < MAX_ENTRY; i++) { + if (!adam2_env[i].name) { + adam2_env[i].name = name; + adam2_env[i].value = value; + return; + } else if (!strcmp(adam2_env[i].name, name)) { + adam2_env[i].value = value; + return; + } + } +} + +static int __init parse_psp_env(void *psp_env_base) +{ + int i, n; + char *name, *value; + struct psp_env_chunk *chunks = (struct psp_env_chunk *)psp_env_data; + + memcpy_fromio(chunks, psp_env_base, PSP_ENV_SIZE); + + i = 1; + n = PSP_ENV_SIZE / sizeof(struct psp_env_chunk); + while (i < n) { + if ((chunks[i].num == 0xff) || ((i + chunks[i].len) > n)) + break; + value = chunks[i].data; + if (chunks[i].num) { + name = lookup_psp_var_map(chunks[i].num); + } else { + name = value; + value += strlen(name) + 1; + } + if (name) + add_adam2_var(name, value); + i += chunks[i].len; + } + return 0; +} + +static void __init ar7_init_env(struct env_var *env) +{ + int i; + struct psbl_rec *psbl = (struct psbl_rec *)(KSEG1ADDR(0x14000300)); + void *psp_env = (void *)KSEG1ADDR(psbl->env_base); + + if (strcmp(psp_env, psp_env_version) == 0) { + parse_psp_env(psp_env); + } else { + for (i = 0; i < MAX_ENTRY; i++, env++) + if (env->name) + add_adam2_var(env->name, env->value); + } +} + +static void __init console_config(void) +{ +#ifdef CONFIG_SERIAL_8250_CONSOLE + char console_string[40]; + int baud = 0; + char parity = '\0', bits = '\0', flow = '\0'; + char *s, *p; + + if (strstr(arcs_cmdline, "console=")) + return; + + s = prom_getenv("modetty0"); + if (s) { + baud = simple_strtoul(s, &p, 10); + s = p; + if (*s == ',') + s++; + if (*s) + parity = *s++; + if (*s == ',') + s++; + if (*s) + bits = *s++; + if (*s == ',') + s++; + if (*s == 'h') + flow = 'r'; + } + + if (baud == 0) + baud = 38400; + if (parity != 'n' && parity != 'o' && parity != 'e') + parity = 'n'; + if (bits != '7' && bits != '8') + bits = '8'; + + if (flow == 'r') + sprintf(console_string, " console=ttyS0,%d%c%c%c", baud, + parity, bits, flow); + else + sprintf(console_string, " console=ttyS0,%d%c%c", baud, parity, + bits); + strlcat(arcs_cmdline, console_string, COMMAND_LINE_SIZE); +#endif +} + +void __init prom_init(void) +{ + ar7_init_cmdline(fw_arg0, (char **)fw_arg1); + ar7_init_env((struct env_var *)fw_arg2); + console_config(); + + ar7_gpio_init(); +} + +#define PORT(offset) (KSEG1ADDR(AR7_REGS_UART0 + (offset * 4))) +static inline unsigned int serial_in(int offset) +{ + return readl((void *)PORT(offset)); +} + +static inline void serial_out(int offset, int value) +{ + writel(value, (void *)PORT(offset)); +} + +int prom_putchar(char c) +{ + while ((serial_in(UART_LSR) & UART_LSR_TEMT) == 0) + ; + serial_out(UART_TX, c); + return 1; +} diff --git a/kernel/arch/mips/ar7/setup.c b/kernel/arch/mips/ar7/setup.c new file mode 100644 index 000000000..820b7a313 --- /dev/null +++ b/kernel/arch/mips/ar7/setup.c @@ -0,0 +1,105 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + */ +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/pm.h> +#include <linux/time.h> + +#include <asm/reboot.h> +#include <asm/mach-ar7/ar7.h> +#include <asm/mach-ar7/prom.h> +#include <asm/mach-ar7/gpio.h> + +static void ar7_machine_restart(char *command) +{ + u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1); + + writel(1, softres_reg); +} + +static void ar7_machine_halt(void) +{ + while (1) + ; +} + +static void ar7_machine_power_off(void) +{ + u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1); + u32 power_state = readl(power_reg) | (3 << 30); + + writel(power_state, power_reg); + ar7_machine_halt(); +} + +const char *get_system_type(void) +{ + u16 chip_id = ar7_chip_id(); + u16 titan_variant_id = titan_chip_id(); + + switch (chip_id) { + case AR7_CHIP_7100: + return "TI AR7 (TNETD7100)"; + case AR7_CHIP_7200: + return "TI AR7 (TNETD7200)"; + case AR7_CHIP_7300: + return "TI AR7 (TNETD7300)"; + case AR7_CHIP_TITAN: + switch (titan_variant_id) { + case TITAN_CHIP_1050: + return "TI AR7 (TNETV1050)"; + case TITAN_CHIP_1055: + return "TI AR7 (TNETV1055)"; + case TITAN_CHIP_1056: + return "TI AR7 (TNETV1056)"; + case TITAN_CHIP_1060: + return "TI AR7 (TNETV1060)"; + } + default: + return "TI AR7 (unknown)"; + } +} + +static int __init ar7_init_console(void) +{ + return 0; +} +console_initcall(ar7_init_console); + +/* + * Initializes basic routines and structures pointers, memory size (as + * given by the bios and saves the command line. + */ +void __init plat_mem_setup(void) +{ + unsigned long io_base; + + _machine_restart = ar7_machine_restart; + _machine_halt = ar7_machine_halt; + pm_power_off = ar7_machine_power_off; + + io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000); + if (!io_base) + panic("Can't remap IO base!"); + set_io_port_base(io_base); + + prom_meminit(); + + printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n", + get_system_type(), ar7_chip_id(), ar7_chip_rev()); +} diff --git a/kernel/arch/mips/ar7/time.c b/kernel/arch/mips/ar7/time.c new file mode 100644 index 000000000..22c93213b --- /dev/null +++ b/kernel/arch/mips/ar7/time.c @@ -0,0 +1,43 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Setting up the clock on the MIPS boards. + */ + +#include <linux/init.h> +#include <linux/time.h> +#include <linux/err.h> +#include <linux/clk.h> + +#include <asm/time.h> +#include <asm/mach-ar7/ar7.h> + +void __init plat_time_init(void) +{ + struct clk *cpu_clk; + + /* Initialize ar7 clocks so the CPU clock frequency is correct */ + ar7_init_clocks(); + + cpu_clk = clk_get(NULL, "cpu"); + if (IS_ERR(cpu_clk)) { + printk(KERN_ERR "unable to get cpu clock\n"); + return; + } + + mips_hpt_frequency = clk_get_rate(cpu_clk) / 2; +} |