diff options
| author | Jeffy Chen <jeffy.chen@rock-chips.com> | 2015-12-22 18:18:59 +0800 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2016-01-11 15:16:35 -0800 |
| commit | ca5098b8651c43b088d5fa7e737c0630767519bf (patch) | |
| tree | 2c59844f92828339a26df65c3c62bff500cb269a | |
| parent | dbf4bb8a1ce467b5b6171d3e7790360e007725d2 (diff) | |
| download | v4.1-ca5098b8651c43b088d5fa7e737c0630767519bf.tar.gz | |
VENDOR: ARM: rockchip: rk3036: save boot mode for "reboot fastboot"
When try to reboot with "fastboot" cmd, save boot mode in
grf_os_reg0, then the loader could check it and enter fastboot
mode.
Bug: 25923642
Patchset: rk3036 evb bring up
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Change-Id: Id598852614e2ed03a03c58dc0cf2f17cc164308c
| -rw-r--r-- | arch/arm/mach-rockchip/rockchip.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/rockchip.c b/arch/arm/mach-rockchip/rockchip.c index d483b718764..a52a12a30a8 100644 --- a/arch/arm/mach-rockchip/rockchip.c +++ b/arch/arm/mach-rockchip/rockchip.c @@ -30,10 +30,14 @@ #include "pm.h" #define RK3036_TIMER_PHYS 0x20044000 +#define RK3036_GRF_OS_REG0 0x001c8 #define RK3288_GRF_SOC_CON0 0x244 #define RK3288_TIMER6_7_PHYS 0xff810000 +#define ROCKCHIP_BOOT_MODE_NORMAL 0 +#define ROCKCHIP_BOOT_MODE_FASTBOOT 0x1 + static void rockchip_init_arch_timer_supply(resource_size_t phys, int offs) { void __iomem *reg_base = ioremap(phys, SZ_16K); @@ -79,11 +83,46 @@ static void __init rockchip_timer_init(void) clocksource_of_init(); } +static int rockchip_restart_notify(struct notifier_block *this, + unsigned long event, void *ptr) +{ + unsigned int boot_mode = ROCKCHIP_BOOT_MODE_NORMAL; + + if (ptr == NULL) + return NOTIFY_DONE; + + if (!strcmp((char *)ptr, "fastboot")) + boot_mode = ROCKCHIP_BOOT_MODE_FASTBOOT; + + if (of_machine_is_compatible("rockchip,rk3036")) { + struct regmap *grf = NULL; + + grf = syscon_regmap_lookup_by_compatible("rockchip,rk3036-grf"); + + if (!IS_ERR(grf)) + /* + * We use GRF_OS_REG0 to save boot mode. + */ + regmap_write(grf, RK3036_GRF_OS_REG0, boot_mode); + else + pr_err("rockchip: could not get grf syscon\n"); + } + + return NOTIFY_DONE; +} + +static struct notifier_block rockchip_restart_handler = { + .notifier_call = rockchip_restart_notify, + .priority = INT_MAX, +}; + static void __init rockchip_dt_init(void) { rockchip_suspend_init(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); platform_device_register_simple("cpufreq-dt", 0, NULL, 0); + + register_reboot_notifier(&rockchip_restart_handler); } static const char * const rockchip_board_dt_compat[] = { |