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| author | Ye.Li <B37916@freescale.com> | 2014-06-11 15:49:22 +0800 |
|---|---|---|
| committer | Ye.Li <B37916@freescale.com> | 2014-06-17 11:13:57 +0800 |
| commit | 98c15deb3083d5dac7900c58e95f2ac2f422a4d3 (patch) | |
| tree | 04384a22760755a17a5757f11b46dcbbe9934447 /arch/arm | |
| parent | fd00c322d058e02953a336517547174edaf2c573 (diff) | |
| download | u-boot-imx-98c15deb3083d5dac7900c58e95f2ac2f422a4d3.zip u-boot-imx-98c15deb3083d5dac7900c58e95f2ac2f422a4d3.tar.gz u-boot-imx-98c15deb3083d5dac7900c58e95f2ac2f422a4d3.tar.bz2 | |
ENGR00315894-57 iMX6SX: Add M4 boot support at soc level
Implement the override function "arch_auxiliary_core_up" to boot
Cortex-M4 by executing command "bootaux".
The parameter "boot_private_data" points to fields where stores
the stack address and PC address for M4 to run.
Signed-off-by: Ye.Li <B37916@freescale.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 25 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx6/imx-regs.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx6/sys_proto.h | 4 |
3 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index b31ad04..3b8f613 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -516,6 +516,31 @@ void imx_get_mac_from_fuse(int dev_id, unsigned char *mac) } #endif +#ifdef CONFIG_MX6SX +int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data) +{ + struct src *src_reg; + u32 stack, pc; + + if (!boot_private_data) + return 1; + + stack = *(u32 *)boot_private_data; + pc = *(u32 *)(boot_private_data + 4); + + /* Set the stack and pc to M4 bootROM */ + writel(stack, M4_BOOTROM_BASE_ADDR); + writel(pc, M4_BOOTROM_BASE_ADDR + 4); + + /* Enable M4 */ + src_reg = (struct src *)SRC_BASE_ADDR; + setbits_le32(&src_reg->scr, 0x00400000); + clrbits_le32(&src_reg->scr, 0x00000010); + + return 0; +} +#endif + void boot_mode_apply(unsigned cfg_val) { unsigned reg; diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h index 9532e5e..bca71c2 100644 --- a/arch/arm/include/asm/arch-mx6/imx-regs.h +++ b/arch/arm/include/asm/arch-mx6/imx-regs.h @@ -27,6 +27,7 @@ #define GPU_ARB_END_ADDR 0x01803FFF #define APBH_DMA_ARB_BASE_ADDR 0x01804000 #define APBH_DMA_ARB_END_ADDR 0x0180BFFF +#define M4_BOOTROM_BASE_ADDR 0x007F8000 #define MXS_APBH_BASE APBH_DMA_ARB_BASE_ADDR #define MXS_GPMI_BASE (APBH_DMA_ARB_BASE_ADDR + 0x02000) diff --git a/arch/arm/include/asm/arch-mx6/sys_proto.h b/arch/arm/include/asm/arch-mx6/sys_proto.h index c546096..df7a0a2 100644 --- a/arch/arm/include/asm/arch-mx6/sys_proto.h +++ b/arch/arm/include/asm/arch-mx6/sys_proto.h @@ -30,6 +30,10 @@ void set_anatop_bypass(void); void ldo_mode_set(int ldo_bypass); #endif +#ifdef CONFIG_MX6SX +int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data); +#endif + /* * Initializes on-chip ethernet controllers. * to override, implement board_eth_init() |