diff options
| author | Reinhard Meyer <u-boot@emk-elektronik.de> | 2010-09-14 16:38:57 +0200 |
|---|---|---|
| committer | Reinhard Meyer <u-boot@emk-elektronik.de> | 2010-10-05 16:58:56 +0200 |
| commit | 6341c5cf87cc966774dd3be429af9aa1a61cfa68 (patch) | |
| tree | b67ec00af6ad23425a42b70bcb8069adb3bfacda /arch/arm/cpu/arm926ejs/at91 | |
| parent | 38bda019e484c459e0d7a2ffb7be124bca14f586 (diff) | |
| download | u-boot-imx-6341c5cf87cc966774dd3be429af9aa1a61cfa68.zip u-boot-imx-6341c5cf87cc966774dd3be429af9aa1a61cfa68.tar.gz u-boot-imx-6341c5cf87cc966774dd3be429af9aa1a61cfa68.tar.bz2 | |
AT91: convert cpu.c to struct SoC access
Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
Diffstat (limited to 'arch/arm/cpu/arm926ejs/at91')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/at91/cpu.c | 32 |
1 files changed, 12 insertions, 20 deletions
diff --git a/arch/arm/cpu/arm926ejs/at91/cpu.c b/arch/arm/cpu/arm926ejs/at91/cpu.c index 141a7d1..087fe95 100644 --- a/arch/arm/cpu/arm926ejs/at91/cpu.c +++ b/arch/arm/cpu/arm926ejs/at91/cpu.c @@ -1,4 +1,6 @@ /* + * (C) Copyright 2010 + * Reinhard Meyer, reinhard.meyer@emk-elektronik.de * (C) Copyright 2009 * Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> * @@ -22,12 +24,10 @@ */ #include <common.h> -#ifdef CONFIG_AT91_LEGACY -#warning Your board is using legacy SoC access. Please update! -#endif #include <asm/arch/hardware.h> #include <asm/arch/at91_pmc.h> +#include <asm/arch/at91_gpbr.h> #include <asm/arch/clk.h> #include <asm/arch/io.h> @@ -35,13 +35,6 @@ #define CONFIG_SYS_AT91_MAIN_CLOCK 0 #endif -/* - * The at91sam9260 has 4 GPBR (0-3), we'll use the last one, nr 3, - * to keep track of the bootcount. - */ -#define AT91_GPBR_BOOTCOUNT_REGISTER 3 -#define AT91_BOOTCOUNT_ADDRESS (AT91_GPBR + 4*AT91_GPBR_BOOTCOUNT_REGISTER) - int arch_cpu_init(void) { return at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK); @@ -66,27 +59,26 @@ int print_cpuinfo(void) #ifdef CONFIG_BOOTCOUNT_LIMIT /* - * Just as the mpc5xxx, we combine the BOOTCOUNT_MAGIC and boocount - * in one 32-bit register. This is done, as the AT91SAM9260 only has - * 4 GPBR. + * We combine the BOOTCOUNT_MAGIC and bootcount in one 32-bit register. + * This is done so we need to use only one of the four GPBR registers. */ void bootcount_store (ulong a) { - volatile ulong *save_addr = - (volatile ulong *)(AT91_BASE_SYS + AT91_BOOTCOUNT_ADDRESS); + at91_gpbr_t *gpbr = (at91_gpbr_t *) AT91_GPR_BASE; - *save_addr = (BOOTCOUNT_MAGIC & 0xffff0000) | (a & 0x0000ffff); + writel((BOOTCOUNT_MAGIC & 0xffff0000) | (a & 0x0000ffff), + &gpbr->reg[AT91_GPBR_INDEX_BOOTCOUNT]); } ulong bootcount_load (void) { - volatile ulong *save_addr = - (volatile ulong *)(AT91_BASE_SYS + AT91_BOOTCOUNT_ADDRESS); + at91_gpbr_t *gpbr = (at91_gpbr_t *) AT91_GPR_BASE; - if ((*save_addr & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000)) + ulong val = readl(&gpbr->reg[AT91_GPBR_INDEX_BOOTCOUNT]); + if ((val & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000)) return 0; else - return (*save_addr & 0x0000ffff); + return val & 0x0000ffff; } #endif /* CONFIG_BOOTCOUNT_LIMIT */ |