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Diffstat (limited to 'qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common')
-rw-r--r--qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/Makefile13
-rw-r--r--qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/cpu_info.c41
-rw-r--r--qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/pwm.c171
-rw-r--r--qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/sromc.c33
-rw-r--r--qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/timer.c132
5 files changed, 390 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/Makefile b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/Makefile
new file mode 100644
index 000000000..f571d8a0e
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/Makefile
@@ -0,0 +1,13 @@
+#
+# Copyright (C) 2009 Samsung Electronics
+# Minkyu Kang <mk7.kang@samsung.com>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y += cpu_info.o
+ifndef CONFIG_SPL_BUILD
+obj-y += timer.o
+obj-y += sromc.o
+obj-$(CONFIG_PWM) += pwm.o
+endif
diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/cpu_info.c b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/cpu_info.c
new file mode 100644
index 000000000..a8d91e769
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/cpu_info.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clk.h>
+
+/* Default is s5pc100 */
+unsigned int s5p_cpu_id = 0xC100;
+/* Default is EVT1 */
+unsigned int s5p_cpu_rev = 1;
+
+#ifdef CONFIG_ARCH_CPU_INIT
+int arch_cpu_init(void)
+{
+ s5p_set_cpu_id();
+
+ return 0;
+}
+#endif
+
+u32 get_device_type(void)
+{
+ return s5p_cpu_id;
+}
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+int print_cpuinfo(void)
+{
+ char buf[32];
+
+ printf("CPU:\t%s%X@%sMHz\n",
+ s5p_get_cpu_name(), s5p_cpu_id,
+ strmhz(buf, get_arm_clk()));
+
+ return 0;
+}
+#endif
diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/pwm.c b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/pwm.c
new file mode 100644
index 000000000..b8805c8d4
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/pwm.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics
+ *
+ * Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <pwm.h>
+#include <asm/io.h>
+#include <asm/arch/pwm.h>
+#include <asm/arch/clk.h>
+
+int pwm_enable(int pwm_id)
+{
+ const struct s5p_timer *pwm =
+ (struct s5p_timer *)samsung_get_base_timer();
+ unsigned long tcon;
+
+ tcon = readl(&pwm->tcon);
+ tcon |= TCON_START(pwm_id);
+
+ writel(tcon, &pwm->tcon);
+
+ return 0;
+}
+
+void pwm_disable(int pwm_id)
+{
+ const struct s5p_timer *pwm =
+ (struct s5p_timer *)samsung_get_base_timer();
+ unsigned long tcon;
+
+ tcon = readl(&pwm->tcon);
+ tcon &= ~TCON_START(pwm_id);
+
+ writel(tcon, &pwm->tcon);
+}
+
+static unsigned long pwm_calc_tin(int pwm_id, unsigned long freq)
+{
+ unsigned long tin_parent_rate;
+ unsigned int div;
+
+ tin_parent_rate = get_pwm_clk();
+
+ for (div = 2; div <= 16; div *= 2) {
+ if ((tin_parent_rate / (div << 16)) < freq)
+ return tin_parent_rate / div;
+ }
+
+ return tin_parent_rate / 16;
+}
+
+#define NS_IN_SEC 1000000000UL
+
+int pwm_config(int pwm_id, int duty_ns, int period_ns)
+{
+ const struct s5p_timer *pwm =
+ (struct s5p_timer *)samsung_get_base_timer();
+ unsigned int offset;
+ unsigned long tin_rate;
+ unsigned long tin_ns;
+ unsigned long frequency;
+ unsigned long tcon;
+ unsigned long tcnt;
+ unsigned long tcmp;
+
+ /*
+ * We currently avoid using 64bit arithmetic by using the
+ * fact that anything faster than 1GHz is easily representable
+ * by 32bits.
+ */
+ if (period_ns > NS_IN_SEC || duty_ns > NS_IN_SEC || period_ns == 0)
+ return -ERANGE;
+
+ if (duty_ns > period_ns)
+ return -EINVAL;
+
+ frequency = NS_IN_SEC / period_ns;
+
+ /* Check to see if we are changing the clock rate of the PWM */
+ tin_rate = pwm_calc_tin(pwm_id, frequency);
+
+ tin_ns = NS_IN_SEC / tin_rate;
+ tcnt = period_ns / tin_ns;
+
+ /* Note, counters count down */
+ tcmp = duty_ns / tin_ns;
+ tcmp = tcnt - tcmp;
+
+ /* Update the PWM register block. */
+ offset = pwm_id * 3;
+ if (pwm_id < 4) {
+ writel(tcnt, &pwm->tcntb0 + offset);
+ writel(tcmp, &pwm->tcmpb0 + offset);
+ }
+
+ tcon = readl(&pwm->tcon);
+ tcon |= TCON_UPDATE(pwm_id);
+ if (pwm_id < 4)
+ tcon |= TCON_AUTO_RELOAD(pwm_id);
+ else
+ tcon |= TCON4_AUTO_RELOAD;
+ writel(tcon, &pwm->tcon);
+
+ tcon &= ~TCON_UPDATE(pwm_id);
+ writel(tcon, &pwm->tcon);
+
+ return 0;
+}
+
+int pwm_init(int pwm_id, int div, int invert)
+{
+ u32 val;
+ const struct s5p_timer *pwm =
+ (struct s5p_timer *)samsung_get_base_timer();
+ unsigned long ticks_per_period;
+ unsigned int offset, prescaler;
+
+ /*
+ * Timer Freq(HZ) =
+ * PWM_CLK / { (prescaler_value + 1) * (divider_value) }
+ */
+
+ val = readl(&pwm->tcfg0);
+ if (pwm_id < 2) {
+ prescaler = PRESCALER_0;
+ val &= ~0xff;
+ val |= (prescaler & 0xff);
+ } else {
+ prescaler = PRESCALER_1;
+ val &= ~(0xff << 8);
+ val |= (prescaler & 0xff) << 8;
+ }
+ writel(val, &pwm->tcfg0);
+ val = readl(&pwm->tcfg1);
+ val &= ~(0xf << MUX_DIV_SHIFT(pwm_id));
+ val |= (div & 0xf) << MUX_DIV_SHIFT(pwm_id);
+ writel(val, &pwm->tcfg1);
+
+ if (pwm_id == 4) {
+ /*
+ * TODO(sjg): Use this as a countdown timer for now. We count
+ * down from the maximum value to 0, then reset.
+ */
+ ticks_per_period = -1UL;
+ } else {
+ const unsigned long pwm_hz = 1000;
+ unsigned long timer_rate_hz = get_pwm_clk() /
+ ((prescaler + 1) * (1 << div));
+
+ ticks_per_period = timer_rate_hz / pwm_hz;
+ }
+
+ /* set count value */
+ offset = pwm_id * 3;
+
+ writel(ticks_per_period, &pwm->tcntb0 + offset);
+
+ val = readl(&pwm->tcon) & ~(0xf << TCON_OFFSET(pwm_id));
+ if (invert && (pwm_id < 4))
+ val |= TCON_INVERTER(pwm_id);
+ writel(val, &pwm->tcon);
+
+ pwm_enable(pwm_id);
+
+ return 0;
+}
diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/sromc.c b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/sromc.c
new file mode 100644
index 000000000..806456fe8
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/sromc.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2010 Samsung Electronics
+ * Naveen Krishna Ch <ch.naveen@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sromc.h>
+
+/*
+ * s5p_config_sromc() - select the proper SROMC Bank and configure the
+ * band width control and bank control registers
+ * srom_bank - SROM
+ * srom_bw_conf - SMC Band witdh reg configuration value
+ * srom_bc_conf - SMC Bank Control reg configuration value
+ */
+void s5p_config_sromc(u32 srom_bank, u32 srom_bw_conf, u32 srom_bc_conf)
+{
+ u32 tmp;
+ struct s5p_sromc *srom =
+ (struct s5p_sromc *)samsung_get_base_sromc();
+
+ /* Configure SMC_BW register to handle proper SROMC bank */
+ tmp = srom->bw;
+ tmp &= ~(0xF << (srom_bank * 4));
+ tmp |= srom_bw_conf;
+ srom->bw = tmp;
+
+ /* Configure SMC_BC register */
+ srom->bc[srom_bank] = srom_bc_conf;
+}
diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/timer.c b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/timer.c
new file mode 100644
index 000000000..949abb1c8
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/s5p-common/timer.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Heungjun Kim <riverful.kim@samsung.com>
+ * Inki Dae <inki.dae@samsung.com>
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <div64.h>
+#include <asm/io.h>
+#include <asm/arch/pwm.h>
+#include <asm/arch/clk.h>
+#include <pwm.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned long get_current_tick(void);
+
+/* macro to read the 16 bit timer */
+static inline struct s5p_timer *s5p_get_base_timer(void)
+{
+ return (struct s5p_timer *)samsung_get_base_timer();
+}
+
+/**
+ * Read the countdown timer.
+ *
+ * This operates at 1MHz and counts downwards. It will wrap about every
+ * hour (2^32 microseconds).
+ *
+ * @return current value of timer
+ */
+static unsigned long timer_get_us_down(void)
+{
+ struct s5p_timer *const timer = s5p_get_base_timer();
+
+ return readl(&timer->tcnto4);
+}
+
+int timer_init(void)
+{
+ /* PWM Timer 4 */
+ pwm_init(4, MUX_DIV_4, 0);
+ pwm_config(4, 100000, 100000);
+ pwm_enable(4);
+
+ /* Use this as the current monotonic time in us */
+ gd->arch.timer_reset_value = 0;
+
+ /* Use this as the last timer value we saw */
+ gd->arch.lastinc = timer_get_us_down();
+ reset_timer_masked();
+
+ return 0;
+}
+
+/*
+ * timer without interrupts
+ */
+unsigned long get_timer(unsigned long base)
+{
+ unsigned long long time_ms;
+
+ ulong now = timer_get_us_down();
+
+ /*
+ * Increment the time by the amount elapsed since the last read.
+ * The timer may have wrapped around, but it makes no difference to
+ * our arithmetic here.
+ */
+ gd->arch.timer_reset_value += gd->arch.lastinc - now;
+ gd->arch.lastinc = now;
+
+ /* Divide by 1000 to convert from us to ms */
+ time_ms = gd->arch.timer_reset_value;
+ do_div(time_ms, 1000);
+ return time_ms - base;
+}
+
+unsigned long __attribute__((no_instrument_function)) timer_get_us(void)
+{
+ static unsigned long base_time_us;
+
+ struct s5p_timer *const timer =
+ (struct s5p_timer *)samsung_get_base_timer();
+ unsigned long now_downward_us = readl(&timer->tcnto4);
+
+ if (!base_time_us)
+ base_time_us = now_downward_us;
+
+ /* Note that this timer counts downward. */
+ return base_time_us - now_downward_us;
+}
+
+/* delay x useconds */
+void __udelay(unsigned long usec)
+{
+ unsigned long count_value;
+
+ count_value = timer_get_us_down();
+ while ((int)(count_value - timer_get_us_down()) < (int)usec)
+ ;
+}
+
+void reset_timer_masked(void)
+{
+ struct s5p_timer *const timer = s5p_get_base_timer();
+
+ /* reset time */
+ gd->arch.lastinc = readl(&timer->tcnto4);
+ gd->arch.tbl = 0;
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+ return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+unsigned long get_tbclk(void)
+{
+ return CONFIG_SYS_HZ;
+}