soc/mediatek/mt8186: 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 can be shown for debugging using MTK internal parsing
tools.

BUG=b:202871018
TEST=build pass

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I7b711755022b5d9767019611151fea65e71edc66
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60828
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Rex-BC Chen
2021-12-02 19:17:06 +08:00
committed by Felix Held
parent 1e9dfd9d8c
commit 362a4819b3
3 changed files with 24 additions and 0 deletions

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@@ -46,6 +46,7 @@ romstage-y += ../common/rtc.c ../common/rtc_osc_init.c rtc.c
ramstage-y += ../common/auxadc.c
ramstage-y += ../common/ddp.c ddp.c
ramstage-y += devapc.c
ramstage-y += ../common/dfd.c
ramstage-y += ../common/dsi.c ../common/mtk_mipi_dphy.c
ramstage-y += emi.c
ramstage-y += ../common/flash_controller.c

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@@ -0,0 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef SOC_MEDIATEK_MT8186_DFD_H
#define SOC_MEDIATEK_MT8186_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

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@@ -1,12 +1,20 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <bootmem.h>
#include <device/device.h>
#include <soc/devapc.h>
#include <soc/dfd.h>
#include <soc/emi.h>
#include <soc/mmu_operations.h>
#include <soc/sspm.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);
@@ -17,6 +25,9 @@ static void soc_init(struct device *dev)
mtk_mmu_disable_l2c_sram();
sspm_init();
dapc_init();
if (CONFIG(MTK_DFD))
dfd_init();
}
static struct device_operations soc_ops = {