mach-imx: bootaux: print stack pointer and reset vector

1. Change information printed about loaded M4 binary, print the stack
pointer and reset vector addressed.
2. Add sanity check for the address provided as param.

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

diff --git a/arch/arm/mach-imx/imx_bootaux.c b/arch/arm/mach-imx/imx_bootaux.c
index 3d9422d5a219e9e6592210dcb54af078f8903759..ee786f7d063d9e7ec47dcfd8d207e53092c77d61 100644 (file)
--- a/arch/arm/mach-imx/imx_bootaux.c
+++ b/arch/arm/mach-imx/imx_bootaux.c
@@ -20,6 +20,9 @@ int arch_auxiliary_core_up(u32 core_id, ulong boot_private_data)
        stack = *(u32 *)boot_private_data;
        pc = *(u32 *)(boot_private_data + 4);
 
+       printf("## Starting auxiliary core stack = 0x%08lX, pc = 0x%08lX...\n",
+              stack, pc);
+
        /* Set the stack and pc to M4 bootROM */
        writel(stack, M4_BOOTROM_BASE_ADDR);
        writel(pc, M4_BOOTROM_BASE_ADDR + 4);
@@ -80,7 +83,8 @@ static 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);
+       if (!addr)
+               return CMD_RET_FAILURE;
 
        ret = arch_auxiliary_core_up(0, addr);
        if (ret)