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| author | Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com> | 2021-09-27 13:49:15 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-11-03 18:52:23 +0000 |
| commit | 5db9fa7433163139e23465433eb2c1e469439540 (patch) | |
| tree | d2a7e044e0e74af32aa288133e6854fc60bd629b | |
| parent | a23d76a8bcaff5fedc370a9850d953005f261202 (diff) | |
| download | coreboot-5db9fa7433163139e23465433eb2c1e469439540.tar.gz coreboot-5db9fa7433163139e23465433eb2c1e469439540.tar.bz2 coreboot-5db9fa7433163139e23465433eb2c1e469439540.zip | |
soc/mediatek/mt8186: Initialize watchdog
MT8186 requires writing speical value to mode register to clear
status register. The flow of clear status is different from other
platforms, so we override mtk_wdt_clr_status() for MT8186.
TEST=build pass
BUG=b:202871018
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I290b69573a8e58db76814e16b5c17c23413f1108
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58835
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/soc/mediatek/mt8186/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8186/Makefile.inc | 4 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8186/bootblock.c | 2 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8186/wdt.c | 17 |
4 files changed, 24 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8186/Kconfig b/src/soc/mediatek/mt8186/Kconfig index 28589e3bf7c9..9fa391aca79e 100644 --- a/src/soc/mediatek/mt8186/Kconfig +++ b/src/soc/mediatek/mt8186/Kconfig @@ -6,6 +6,7 @@ config SOC_MEDIATEK_MT8186 select ARCH_ROMSTAGE_ARMV8_64 select ARCH_RAMSTAGE_ARMV8_64 select HAVE_UART_SPECIAL + select SOC_MEDIATEK_COMMON if SOC_MEDIATEK_MT8186 diff --git a/src/soc/mediatek/mt8186/Makefile.inc b/src/soc/mediatek/mt8186/Makefile.inc index c9cb305842a9..72d67cc00768 100644 --- a/src/soc/mediatek/mt8186/Makefile.inc +++ b/src/soc/mediatek/mt8186/Makefile.inc @@ -5,22 +5,26 @@ bootblock-y += ../common/mmu_operations.c bootblock-$(CONFIG_SPI_FLASH) += spi.c bootblock-y += ../common/timer.c bootblock-y += ../common/uart.c +bootblock-y += ../common/wdt.c wdt.c verstage-$(CONFIG_SPI_FLASH) += spi.c verstage-y += ../common/timer.c verstage-y += ../common/uart.c +verstage-y += ../common/wdt.c wdt.c romstage-y += ../common/cbmem.c romstage-y += emi.c romstage-$(CONFIG_SPI_FLASH) += spi.c romstage-y += ../common/timer.c romstage-y += ../common/uart.c +romstage-y += ../common/wdt.c wdt.c ramstage-y += emi.c ramstage-$(CONFIG_SPI_FLASH) += spi.c ramstage-y += soc.c ramstage-y += ../common/timer.c ramstage-y += ../common/uart.c +ramstage-y += ../common/wdt.c wdt.c CPPFLAGS_common += -Isrc/soc/mediatek/mt8186/include CPPFLAGS_common += -Isrc/soc/mediatek/common/include diff --git a/src/soc/mediatek/mt8186/bootblock.c b/src/soc/mediatek/mt8186/bootblock.c index f48e78c309a3..770c6031dabf 100644 --- a/src/soc/mediatek/mt8186/bootblock.c +++ b/src/soc/mediatek/mt8186/bootblock.c @@ -2,8 +2,10 @@ #include <bootblock_common.h> #include <soc/mmu_operations.h> +#include <soc/wdt.h> void bootblock_soc_init(void) { mtk_mmu_init(); + mtk_wdt_init(); } diff --git a/src/soc/mediatek/mt8186/wdt.c b/src/soc/mediatek/mt8186/wdt.c new file mode 100644 index 000000000000..d0e13d98e94a --- /dev/null +++ b/src/soc/mediatek/mt8186/wdt.c @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * This file is created based on MT8186 Functional Specification + * Chapter number: 3.4 + */ + +#include <device/mmio.h> +#include <soc/addressmap.h> +#include <soc/wdt.h> + +#define MTK_WDT_CLR_STATUS 0x22000000 + +void mtk_wdt_clr_status(uint32_t wdt_sta) +{ + write32(&mtk_wdt->wdt_mode, wdt_sta | MTK_WDT_CLR_STATUS); +} |