diff options
author | Rex-BC Chen <rex-bc.chen@mediatek.com> | 2021-07-12 15:01:11 +0800 |
---|---|---|
committer | Felix Held <felix-coreboot@felixheld.de> | 2021-08-06 14:43:02 +0000 |
commit | eef442d0c1d4bab616aaa077d80a56c64cac6f1e (patch) | |
tree | 54a92fa860db870ad2fed22ea2006579799cf672 /src/soc/mediatek/mt8192 | |
parent | 59c9327cbd7af6aace8587f71f47d25396b57b7b (diff) |
soc/mediatek/mt8192: initialize DFD
DFD (Design for Debug) is a debugging tool, which scans
flip-flops and dumps to internal RAM on the WDT reset.
After system reboots, those values could be showed for
debugging.
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I39a4391c1d1e832d77b709f8f899bb1c6dcacd69
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56797
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Diffstat (limited to 'src/soc/mediatek/mt8192')
-rw-r--r-- | src/soc/mediatek/mt8192/Kconfig | 6 | ||||
-rw-r--r-- | src/soc/mediatek/mt8192/Makefile.inc | 1 | ||||
-rw-r--r-- | src/soc/mediatek/mt8192/dfd.c | 12 | ||||
-rw-r--r-- | src/soc/mediatek/mt8192/include/soc/dfd.h | 17 | ||||
-rw-r--r-- | src/soc/mediatek/mt8192/soc.c | 10 |
5 files changed, 46 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8192/Kconfig b/src/soc/mediatek/mt8192/Kconfig index eb4aab65fe..21dcc7c478 100644 --- a/src/soc/mediatek/mt8192/Kconfig +++ b/src/soc/mediatek/mt8192/Kconfig @@ -63,4 +63,10 @@ config SRCLKEN_RC_SUPPORT This option enables clock buffer remote controller module to control PMIC 26MHz clock output. +config MTK_DFD + bool + default n + help + This option enables DFD (Design for Debug) settings. + endif diff --git a/src/soc/mediatek/mt8192/Makefile.inc b/src/soc/mediatek/mt8192/Makefile.inc index e5043597d0..5bd88c32a4 100644 --- a/src/soc/mediatek/mt8192/Makefile.inc +++ b/src/soc/mediatek/mt8192/Makefile.inc @@ -46,6 +46,7 @@ ramstage-y += apusys.c ramstage-y += ../common/auxadc.c ramstage-y += ../common/ddp.c ddp.c ramstage-y += devapc.c +ramstage-y += dfd.c ramstage-y += ../common/dpm.c ramstage-y += ../common/dsi.c ../common/mtk_mipi_dphy.c ramstage-y += ../common/flash_controller.c diff --git a/src/soc/mediatek/mt8192/dfd.c b/src/soc/mediatek/mt8192/dfd.c new file mode 100644 index 0000000000..4d1b08aab4 --- /dev/null +++ b/src/soc/mediatek/mt8192/dfd.c @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <console/console.h> +#include <device/mmio.h> +#include <soc/dfd.h> + +void dfd_init(void) +{ + printk(BIOS_INFO, "[%s]\n", __func__); + setbits32(dfd_cfg, RESET_ON_KEEP_EN); + dsb(); +} diff --git a/src/soc/mediatek/mt8192/include/soc/dfd.h b/src/soc/mediatek/mt8192/include/soc/dfd.h new file mode 100644 index 0000000000..650e5fd091 --- /dev/null +++ b/src/soc/mediatek/mt8192/include/soc/dfd.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef SOC_MEDIATEK_MT8192_DFD_H +#define SOC_MEDIATEK_MT8192_DFD_H + +#define CPC_FLOW_CTRL_CFG 0x0C53A814 +#define RESET_ON_KEEP_EN BIT(17) + +/* DFD dump address and size need to be the same as defined in Kernel DTS. */ +#define DFD_DUMP_ADDRESS 0x6A000000 +#define DFD_DUMP_SIZE (1 * MiB) + +static u32 *const dfd_cfg = (void *)CPC_FLOW_CTRL_CFG; + +void dfd_init(void); + +#endif diff --git a/src/soc/mediatek/mt8192/soc.c b/src/soc/mediatek/mt8192/soc.c index 70c5fa32a3..006a212da9 100644 --- a/src/soc/mediatek/mt8192/soc.c +++ b/src/soc/mediatek/mt8192/soc.c @@ -1,8 +1,10 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +#include <bootmem.h> #include <device/device.h> #include <soc/apusys.h> #include <soc/devapc.h> +#include <soc/dfd.h> #include <soc/emi.h> #include <soc/mcupm.h> #include <soc/mmu_operations.h> @@ -10,6 +12,12 @@ #include <soc/ufs.h> #include <symbols.h> +void bootmem_platform_add_ranges(void) +{ + if (CONFIG(MTK_DFD)) + bootmem_add_range(DFD_DUMP_ADDRESS, DFD_DUMP_SIZE, BM_MEM_RESERVED); +} + static void soc_read_resources(struct device *dev) { ram_resource(dev, 0, (uintptr_t)_dram / KiB, sdram_size() / KiB); @@ -22,6 +30,8 @@ static void soc_init(struct device *dev) dapc_init(); mcupm_init(); sspm_init(); + if (CONFIG(MTK_DFD)) + dfd_init(); ufs_disable_refclk(); } |