From 7cdc27b4bb538861185af88dce786221e2789119 Mon Sep 17 00:00:00 2001 From: Igor Opaniuk Date: Thu, 28 Nov 2019 15:56:19 +0200 Subject: 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 Reviewed-by: Oleksandr Suvorov (submitted upstream https://patchwork.ozlabs.org/patch/1202072/) --- arch/arm/mach-imx/imx_bootaux.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/imx_bootaux.c b/arch/arm/mach-imx/imx_bootaux.c index 18d7e6819c..97c49536c8 100644 --- 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) -- cgit v1.2.3