diff options
Diffstat (limited to 'arch/arm/imx-common/imx_bootaux.c')
| -rw-r--r-- | arch/arm/imx-common/imx_bootaux.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/arch/arm/imx-common/imx_bootaux.c b/arch/arm/imx-common/imx_bootaux.c index 69026df763..4d697b0660 100644 --- a/arch/arm/imx-common/imx_bootaux.c +++ b/arch/arm/imx-common/imx_bootaux.c @@ -8,13 +8,13 @@ #include <command.h> /* Allow for arch specific config before we boot */ -static int __arch_auxiliary_core_up(u32 core_id, u32 boot_private_data) +static int __arch_auxiliary_core_up(u32 core_id, u32 stack, u32 pc) { /* please define platform specific arch_auxiliary_core_up() */ return CMD_RET_FAILURE; } -int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data) +int arch_auxiliary_core_up(u32 core_id, u32 stack, u32 pc) __attribute__((weak, alias("__arch_auxiliary_core_up"))); /* Allow for arch specific config before we boot */ @@ -31,17 +31,10 @@ int arch_auxiliary_core_check_up(u32 core_id) * To i.MX6SX and i.MX7D, the image supported by bootaux needs * the reset vector at the head for the image, with SP and PC * as the first two words. - * - * Per the cortex-M reference manual, the reset vector of M4 needs - * to exist at 0x0 (TCMUL). The PC and SP are the first two addresses - * of that vector. So to boot M4, the A core must build the M4's reset - * vector with getting the PC and SP from image and filling them to - * TCMUL. When M4 is kicked, it will load the PC and SP by itself. - * The TCMUL is mapped to (M4_BOOTROM_BASE_ADDR) at A core side for - * accessing the M4 TCMUL. */ int do_bootaux(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { + u32 stack, pc; ulong addr; int ret, up; @@ -56,9 +49,13 @@ int do_bootaux(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) addr = simple_strtoul(argv[1], NULL, 16); - printf("## Starting auxiliary core at 0x%08lX ...\n", addr); + /* Assume binary file with vector table at the beginning */ + stack = *(u32 *)addr; + pc = *(u32 *)(addr + 4); + + printf("## Starting auxiliary core at 0x%08X ...\n", pc); - ret = arch_auxiliary_core_up(0, addr); + ret = arch_auxiliary_core_up(0, stack, pc); if (ret) return CMD_RET_FAILURE; |