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soc/mediatek/mt8195: 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.

BUG=b:192429713

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: Ied63913db94b2e52ab394a66c70f7edfd507c99b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57980
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Rex-BC Chen 2021-08-10 12:39:32 +08:00 committed by Hung-Te Lin
parent 98affb68f0
commit 61be50dafb
3 changed files with 25 additions and 0 deletions
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1
src/soc/mediatek/mt8195/Makefile.inc
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@ -52,6 +52,7 @@ romstage-y += ../common/rtc.c ../common/rtc_osc_init.c ../common/rtc_mt6359p.c
ramstage-y += ../common/auxadc.c ramstage-y += ../common/auxadc.c
ramstage-y += ../common/ddp.c ddp.c ramstage-y += ../common/ddp.c ddp.c
ramstage-y += devapc.c ramstage-y += devapc.c
ramstage-y += ../common/dfd.c
ramstage-y += ../common/dpm.c ramstage-y += ../common/dpm.c
ramstage-$(CONFIG_DPM_FOUR_CHANNEL) += dpm_4ch.c ramstage-$(CONFIG_DPM_FOUR_CHANNEL) += dpm_4ch.c
ramstage-y += dp_intf.c dptx.c dptx_hal.c ramstage-y += dp_intf.c dptx.c dptx_hal.c

12
src/soc/mediatek/mt8195/include/soc/dfd.h Normal file
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@ -0,0 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef SOC_MEDIATEK_MT8195_DFD_H
#define SOC_MEDIATEK_MT8195_DFD_H
#include <soc/dfd_common.h>
/* 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)
#endif

12
src/soc/mediatek/mt8195/soc.c
View File

@ -1,7 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0-only */ /* SPDX-License-Identifier: GPL-2.0-only */
#include <bootmem.h>
#include <device/device.h> #include <device/device.h>
#include <soc/devapc.h> #include <soc/devapc.h>
#include <soc/dfd.h>
#include <soc/emi.h> #include <soc/emi.h>
#include <soc/hdmi.h> #include <soc/hdmi.h>
#include <soc/mcupm.h> #include <soc/mcupm.h>
@ -10,6 +12,12 @@
#include <soc/ufs.h> #include <soc/ufs.h>
#include <symbols.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) static void soc_read_resources(struct device *dev)
{ {
ram_resource(dev, 0, (uintptr_t)_dram / KiB, sdram_size() / KiB); ram_resource(dev, 0, (uintptr_t)_dram / KiB, sdram_size() / KiB);
@ -21,6 +29,10 @@ static void soc_init(struct device *dev)
dapc_init(); dapc_init();
mcupm_init(); mcupm_init();
sspm_init(); sspm_init();
if (CONFIG(MTK_DFD))
dfd_init();
ufs_disable_refclk(); ufs_disable_refclk();
hdmi_low_power_setting(); hdmi_low_power_setting();
} }