From cb61b2fb2b94c3ae76e5b5f2083a780c17aa3b57 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Wed, 13 Apr 2022 00:40:26 +0200 Subject: [PATCH] ARM: imx: Get rid of only i.MX8M SMCCC arch call This is the only place where i.MX8M code does SMCCC call, remove it. The output has little value as it prints some part of commit ID, and worse, if there is no SMC handler installed, the code outright hangs or crashes the system. By removing this one instance of SMCCC call, U-Boot no longer depends on SMC handlers and can boot without hanging in any case. If there is a need to dump this commit ID, use CMD_SMC instead and do 'smc' call from U-Boot shell or scripts instead of hard-coding SMCCC dependency into architecture code. This particular code can be replaced by: => smc 0xc2000003 0 0 0 0 0 0 Reviewed-by: Peng Fan Signed-off-by: Marek Vasut Cc: Fabio Estevam Cc: Peng Fan Cc: Stefano Babic --- arch/arm/mach-imx/imx8m/soc.c | 19 ------------------- 1 file changed, 19 deletions(-) diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index ef5add0e65..8171631db1 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -29,7 +29,6 @@ #include #include #include -#include #include DECLARE_GLOBAL_DATA_PTR; @@ -1404,23 +1403,6 @@ void reset_cpu(void) #endif #if defined(CONFIG_ARCH_MISC_INIT) -static void acquire_buildinfo(void) -{ - u64 atf_commit = 0; - struct arm_smccc_res res; - - /* Get ARM Trusted Firmware commit id */ - arm_smccc_smc(IMX_SIP_BUILDINFO, IMX_SIP_BUILDINFO_GET_COMMITHASH, - 0, 0, 0, 0, 0, 0, &res); - atf_commit = res.a0; - if (atf_commit == 0xffffffff) { - debug("ATF does not support build info\n"); - atf_commit = 0x30; /* Display 0, 0 ascii is 0x30 */ - } - - printf("\n BuildInfo:\n - ATF %s\n\n", (char *)&atf_commit); -} - int arch_misc_init(void) { if (IS_ENABLED(CONFIG_FSL_CAAM)) { @@ -1431,7 +1413,6 @@ int arch_misc_init(void) if (ret) printf("Failed to initialize %s: %d\n", dev->name, ret); } - acquire_buildinfo(); return 0; } -- 2.39.5