diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0020-Add-system-reset-status-support.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0020-Add-system-reset-status-support.patch | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0020-Add-system-reset-status-support.patch b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0020-Add-system-reset-status-support.patch new file mode 100644 index 000000000..c5d194d6b --- /dev/null +++ b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0020-Add-system-reset-status-support.patch @@ -0,0 +1,164 @@ +From 4027a17dcfa5749cf2777a62c695a5b04377756b Mon Sep 17 00:00:00 2001 +From: Yong Li <yong.b.li@linux.intel.com> +Date: Tue, 9 Apr 2019 14:42:05 +0800 +Subject: [PATCH] Add system reset status support + +Will display the reset reasons and other CPU information in u-boot, +and save the reset reasons into kernel command line, +for applications to query. + +Change-Id: I87ada3ecf14368519e4d09035bb1e09fdc05469b +Signed-off-by: Yong Li <yong.b.li@linux.intel.com> +Signed-off-by: AppaRao Puli <apparao.puli@linux.intel.com> + +--- + arch/arm/include/asm/arch-aspeed/platform.h | 2 + + arch/arm/mach-aspeed/ast-scu.c | 4 ++ + board/aspeed/ast-g5/ast-g5-intel.c | 73 +++++++++++++++++++++ + board/aspeed/ast-g5/ast-g5.c | 7 ++ + 4 files changed, 86 insertions(+) + +diff --git a/arch/arm/include/asm/arch-aspeed/platform.h b/arch/arm/include/asm/arch-aspeed/platform.h +index 3b06e526f5..4e4140d8e4 100644 +--- a/arch/arm/include/asm/arch-aspeed/platform.h ++++ b/arch/arm/include/asm/arch-aspeed/platform.h +@@ -29,6 +29,8 @@ + #include <asm/arch/ast_g5_platform.h> + #include <asm/arch/ast-g5-intel.h> + #define CONFIG_BOARD_EARLY_INIT_F 1 /* Call board_early_init_f */ ++#define CONFIG_BOARD_LATE_INIT 1 /* Call board_late_init */ ++#define CONFIG_DISPLAY_CPUINFO 1 + #else + #err "No define for platform.h" + #endif +diff --git a/arch/arm/mach-aspeed/ast-scu.c b/arch/arm/mach-aspeed/ast-scu.c +index 3a9ba05bf2..976c59b82a 100644 +--- a/arch/arm/mach-aspeed/ast-scu.c ++++ b/arch/arm/mach-aspeed/ast-scu.c +@@ -494,6 +494,9 @@ void ast_scu_sys_rest_info(void) + { + u32 rest = ast_scu_read(AST_SCU_SYS_CTRL); + ++#ifdef AST_SOC_G5 ++ printf("RST : 0x%02x\n", rest); ++#else + if (rest & SCU_SYS_EXT_RESET_FLAG) { + printf("RST : External\n"); + ast_scu_write(SCU_SYS_EXT_RESET_FLAG, AST_SCU_SYS_CTRL); +@@ -506,6 +509,7 @@ void ast_scu_sys_rest_info(void) + } else { + printf("RST : CLK en\n"); + } ++#endif + } + + u32 ast_scu_get_vga_memsize(void) +diff --git a/board/aspeed/ast-g5/ast-g5-intel.c b/board/aspeed/ast-g5/ast-g5-intel.c +index 5796ecf055..a223c798ac 100644 +--- a/board/aspeed/ast-g5/ast-g5-intel.c ++++ b/board/aspeed/ast-g5/ast-g5-intel.c +@@ -333,6 +333,79 @@ static void set_pwm_duty_cycle(int duty) + + } + ++ ++static void update_bootargs_cmd(const char *key, const char *value) ++{ ++ int buf_len; ++ char *buf; ++ char *cmdline; ++ char comp_key[128]; ++ ++ if (!key || (key[0] == '\0')) { ++ printf("%s - Empty key not allowed\n", __func__); ++ return; ++ } ++ ++ cmdline = getenv("bootargs"); ++ ++ /* Allocate space for maximum possible new command line */ ++ if (value) ++ buf_len = strlen(cmdline) + strlen(key) + 3 + strlen(value); ++ else ++ buf_len = strlen(cmdline) + strlen(key) + 3; ++ ++ buf = malloc(buf_len); ++ if (!buf) { ++ printf("%s: out of memory\n", __func__); ++ return; ++ } ++ memset(buf, 0, buf_len); ++ ++ if (!cmdline) { ++ /* lets add key-value, though bootargs are empty */ ++ snprintf(buf, buf_len, "%s=%s", key, (value ? value : "")); ++ setenv("bootargs", buf); ++ free(buf); ++ return; ++ } ++ ++ snprintf(comp_key, sizeof(comp_key), "%s=", key); ++ char *start = strstr(cmdline, comp_key); ++ ++ /* Check for full word match. Match should be start of cmdline ++ * or there should be space before match */ ++ if (start && ((start == cmdline) || (*(start-1) == ' '))) { ++ char *end = strchr(start, ' '); ++ strncpy(buf, cmdline, (start - cmdline)); ++ ++ if (end) ++ snprintf(buf, buf_len, "%s%s=%s %s", buf, key, ++ (value ? value : ""), end+1); ++ else ++ snprintf(buf, buf_len, "%s%s=%s", buf, key, ++ (value ? value : "")); ++ } else { ++ snprintf(buf, buf_len, "%s %s=%s", cmdline, key, ++ (value ? value : "")); ++ } ++ ++ setenv("bootargs", buf); ++ free(buf); ++} ++ ++void ast_g5_intel_late_init(void) ++{ ++ char value[32]; ++ u32 reset_reason = 0; ++ ++ /* save and clear reset status */ ++ reset_reason = ast_scu_read(AST_SCU_SYS_CTRL); ++ snprintf(value, sizeof(value), "0x%x", reset_reason); ++ ast_scu_write(0, AST_SCU_SYS_CTRL); ++ ++ update_bootargs_cmd("resetreason", value); ++} ++ + static void pwm_init(void) + { + uint32_t val; +diff --git a/board/aspeed/ast-g5/ast-g5.c b/board/aspeed/ast-g5/ast-g5.c +index cab5fabcef..d89a2b799a 100644 +--- a/board/aspeed/ast-g5/ast-g5.c ++++ b/board/aspeed/ast-g5/ast-g5.c +@@ -22,6 +22,7 @@ + DECLARE_GLOBAL_DATA_PTR; + + extern void ast_g5_intel(void); ++extern void ast_g5_intel_late_init(void); + + int board_early_init_f(void) + { +@@ -90,6 +91,12 @@ int board_init(void) + return 0; + } + ++int board_late_init(void) ++{ ++ ast_g5_intel_late_init(); ++ return 0; ++} ++ + int dram_init(void) + { + u32 vga = ast_scu_get_vga_memsize(); |