diff options
Diffstat (limited to 'kernel/arch/m68k/coldfire/m528x.c')
| -rw-r--r-- | kernel/arch/m68k/coldfire/m528x.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/kernel/arch/m68k/coldfire/m528x.c b/kernel/arch/m68k/coldfire/m528x.c new file mode 100644 index 000000000..45e947aea --- /dev/null +++ b/kernel/arch/m68k/coldfire/m528x.c @@ -0,0 +1,132 @@ +/***************************************************************************/ + +/* + * m528x.c -- platform support for ColdFire 528x based boards + * + * Sub-architcture dependent initialization code for the Freescale + * 5280, 5281 and 5282 CPUs. + * + * Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfclk.h> + +/***************************************************************************/ + +DEFINE_CLK(pll, "pll.0", MCF_CLK); +DEFINE_CLK(sys, "sys.0", MCF_BUSCLK); +DEFINE_CLK(mcfpit0, "mcfpit.0", MCF_CLK); +DEFINE_CLK(mcfpit1, "mcfpit.1", MCF_CLK); +DEFINE_CLK(mcfpit2, "mcfpit.2", MCF_CLK); +DEFINE_CLK(mcfpit3, "mcfpit.3", MCF_CLK); +DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK); +DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK); +DEFINE_CLK(mcfuart2, "mcfuart.2", MCF_BUSCLK); +DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK); +DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK); + +struct clk *mcf_clks[] = { + &clk_pll, + &clk_sys, + &clk_mcfpit0, + &clk_mcfpit1, + &clk_mcfpit2, + &clk_mcfpit3, + &clk_mcfuart0, + &clk_mcfuart1, + &clk_mcfuart2, + &clk_mcfqspi0, + &clk_fec0, + NULL +}; + +/***************************************************************************/ + +static void __init m528x_qspi_init(void) +{ +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) + /* setup Port QS for QSPI with gpio CS control */ + __raw_writeb(0x07, MCFGPIO_PQSPAR); +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ +} + +/***************************************************************************/ + +static void __init m528x_uarts_init(void) +{ + u8 port; + + /* make sure PUAPAR is set for UART0 and UART1 */ + port = readb(MCFGPIO_PUAPAR); + port |= 0x03 | (0x03 << 2); + writeb(port, MCFGPIO_PUAPAR); +} + +/***************************************************************************/ + +static void __init m528x_fec_init(void) +{ + u16 v16; + + /* Set multi-function pins to ethernet mode for fec0 */ + v16 = readw(MCFGPIO_PASPAR); + writew(v16 | 0xf00, MCFGPIO_PASPAR); + writeb(0xc0, MCFGPIO_PEHLPAR); +} + +/***************************************************************************/ + +#ifdef CONFIG_WILDFIRE +void wildfire_halt(void) +{ + writeb(0, 0x30000007); + writeb(0x2, 0x30000007); +} +#endif + +#ifdef CONFIG_WILDFIREMOD +void wildfiremod_halt(void) +{ + printk(KERN_INFO "WildFireMod hibernating...\n"); + + /* Set portE.5 to Digital IO */ + MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2)); + + /* Make portE.5 an output */ + MCF5282_GPIO_DDRE |= (1 << 5); + + /* Now toggle portE.5 from low to high */ + MCF5282_GPIO_PORTE &= ~(1 << 5); + MCF5282_GPIO_PORTE |= (1 << 5); + + printk(KERN_EMERG "Failed to hibernate. Halting!\n"); +} +#endif + +void __init config_BSP(char *commandp, int size) +{ +#ifdef CONFIG_WILDFIRE + mach_halt = wildfire_halt; +#endif +#ifdef CONFIG_WILDFIREMOD + mach_halt = wildfiremod_halt; +#endif + mach_sched_init = hw_timer_init; + m528x_uarts_init(); + m528x_fec_init(); + m528x_qspi_init(); +} + +/***************************************************************************/ |