diff options
Diffstat (limited to 'board/keymile/common/common.c')
| -rw-r--r-- | board/keymile/common/common.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/board/keymile/common/common.c b/board/keymile/common/common.c index ff07260194c..3999f487192 100644 --- a/board/keymile/common/common.c +++ b/board/keymile/common/common.c @@ -19,6 +19,8 @@ #include <asm/io.h> #include <linux/ctype.h> #include <linux/delay.h> +#include <linux/bug.h> +#include <bootcount.h> #if defined(CONFIG_POST) #include "post.h" @@ -76,6 +78,57 @@ int set_km_env(void) return 0; } +#if CONFIG_IS_ENABLED(PG_WCOM_UBOOT_UPDATE_SUPPORTED) +#if ((!CONFIG_IS_ENABLED(PG_WCOM_UBOOT_BOOTPACKAGE) && \ + !CONFIG_IS_ENABLED(PG_WCOM_UBOOT_UPDATE)) || \ + (CONFIG_IS_ENABLED(PG_WCOM_UBOOT_BOOTPACKAGE) && \ + CONFIG_IS_ENABLED(PG_WCOM_UBOOT_UPDATE))) +#error "It has to be either bootpackage or update u-boot image!" +#endif +void check_for_uboot_update(void) +{ + void (*uboot_update_entry)(void) = + (void (*)(void)) CONFIG_PG_WCOM_UBOOT_UPDATE_TEXT_BASE; + char *isupdated = env_get("updateduboot"); + ulong bootcount = bootcount_load(); + ulong ebootcount = 0; + + if (IS_ENABLED(CONFIG_PG_WCOM_UBOOT_BOOTPACKAGE)) { + /* + * When running in factory burned u-boot move to the updated + * u-boot version only if updateduboot envvar is set to 'yes' + * and bootcount limit is not exceeded. + * Board must be able to start in factory bootloader mode! + */ + if (isupdated && !strncmp(isupdated, "yes", 3) && + bootcount <= CONFIG_BOOTCOUNT_BOOTLIMIT) { + printf("Check update: update detected, "); + printf("starting new image @%08x ...\n", + CONFIG_PG_WCOM_UBOOT_UPDATE_TEXT_BASE); + ebootcount = early_bootcount_load(); + if (ebootcount <= CONFIG_BOOTCOUNT_BOOTLIMIT) { + early_bootcount_store(++ebootcount); + uboot_update_entry(); + } else { + printf("Check update: warning: "); + printf("early bootcount exceeded (%lu)\n", + ebootcount); + } + } + printf("Check update: starting factory image @%08x ...\n", + CONFIG_SYS_TEXT_BASE); + } else if (IS_ENABLED(CONFIG_PG_WCOM_UBOOT_UPDATE)) { + /* + * When running in field updated u-boot, make sure that + * bootcount limit is never exceeded. Must never happen! + */ + WARN_ON(bootcount > CONFIG_BOOTCOUNT_BOOTLIMIT); + printf("Check update: updated u-boot starting @%08x ...\n", + CONFIG_SYS_TEXT_BASE); + } +} +#endif + #if defined(CONFIG_SYS_I2C_INIT_BOARD) static void i2c_write_start_seq(void) { |