From: Suniel Mahesh sunil@amarulasolutions.com
Added support for onboard LED's and push button. When powered board will be in low power mode(yellow LED), on button press, board enters full power mode (red LED) and boots u-boot.
Signed-off-by: Suniel Mahesh sunil@amarulasolutions.com --- Changes for v2:
- Tested on firefly roc-pc-rk3399, an rk3399 based target. --- arch/arm/mach-rockchip/tpl.c | 7 +++++++ board/firefly/roc-pc-rk3399/roc-pc-rk3399.c | 32 +++++++++++++++++++++++++++++ configs/roc-pc-rk3399_defconfig | 1 + 3 files changed, 40 insertions(+)
diff --git a/arch/arm/mach-rockchip/tpl.c b/arch/arm/mach-rockchip/tpl.c index 31a3eb4..a2b8d31 100644 --- a/arch/arm/mach-rockchip/tpl.c +++ b/arch/arm/mach-rockchip/tpl.c @@ -40,11 +40,18 @@ __weak void rockchip_stimer_init(void) TIMER_CONTROL_REG); }
+__weak int board_early_init_f(void) +{ + return 0; +} + void board_init_f(ulong dummy) { struct udevice *dev; int ret;
+ board_early_init_f(); + #if defined(CONFIG_DEBUG_UART) && defined(CONFIG_TPL_SERIAL_SUPPORT) /* * Debug UART can be used from here if required: diff --git a/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c b/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c index d47dba8..de9185a 100644 --- a/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c +++ b/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c @@ -7,6 +7,10 @@ #include <dm.h> #include <asm/arch-rockchip/periph.h> #include <power/regulator.h> +#include <spl_gpio.h> +#include <asm/io.h> +#include <asm/arch-rockchip/gpio.h> +#include <asm/arch-rockchip/grf_rk3399.h>
#ifndef CONFIG_SPL_BUILD int board_early_init_f(void) @@ -27,3 +31,31 @@ out: return 0; } #endif + +#if defined(CONFIG_TPL_BUILD) + +#define PMUGRF_BASE 0xff320000 +#define GPIO0_BASE 0xff720000 + +int board_early_init_f(void) +{ + struct rockchip_gpio_regs * const gpio0 = (void *)GPIO0_BASE; + struct rk3399_pmugrf_regs * const pmugrf = (void *)PMUGRF_BASE; + + /** + * 1. Glow yellow LED, termed as low power + * 2. Poll for on board power key press + * 3. Once 2 done, off yellow and glow red LED, termed as full power + * 4. Continue booting... + */ + spl_gpio_output(gpio0, GPIO(BANK_A, 2), 1); + + spl_gpio_set_pull(&pmugrf->gpio0_p, GPIO(BANK_A, 5), GPIO_PULL_NORMAL); + while (readl(&gpio0->ext_port) & 0x20); + + spl_gpio_output(gpio0, GPIO(BANK_A, 2), 0); + spl_gpio_output(gpio0, GPIO(BANK_B, 5), 1); + + return 0; +} +#endif diff --git a/configs/roc-pc-rk3399_defconfig b/configs/roc-pc-rk3399_defconfig index 5a82029..36c0e0e 100644 --- a/configs/roc-pc-rk3399_defconfig +++ b/configs/roc-pc-rk3399_defconfig @@ -57,3 +57,4 @@ CONFIG_USB_ETHER_RTL8152=y CONFIG_USB_ETHER_SMSC95XX=y CONFIG_SPL_TINY_MEMSET=y CONFIG_ERRNO_STR=y +CONFIG_TPL_GPIO_SUPPORT=y