feat(plat/mdeiatek/mt8195): add DFD control in SiP service
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
Change-Id: I02c6c862b6217bc84c83a09b533bd53ec19b06f7
diff --git a/plat/mediatek/mt8195/drivers/dfd/plat_dfd.c b/plat/mediatek/mt8195/drivers/dfd/plat_dfd.c
new file mode 100644
index 0000000..c083318
--- /dev/null
+++ b/plat/mediatek/mt8195/drivers/dfd/plat_dfd.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <lib/mmio.h>
+#include <mtk_sip_svc.h>
+#include <plat_dfd.h>
+
+static bool dfd_enabled;
+static uint64_t dfd_base_addr;
+static uint64_t dfd_chain_length;
+static uint64_t dfd_cache_dump;
+
+static void dfd_setup(uint64_t base_addr, uint64_t chain_length,
+ uint64_t cache_dump)
+{
+ mmio_write_32(MTK_WDT_LATCH_CTL2, MTK_WDT_LATCH_CTL2_VAL);
+ mmio_write_32(MTK_WDT_INTERVAL, MTK_WDT_INTERVAL_VAL);
+ mmio_write_32(MTK_DRM_LATCH_CTL2, MTK_DRM_LATCH_CTL2_VAL);
+ mmio_write_32(MTK_DRM_LATCH_CTL1, MTK_DRM_LATCH_CTL1_VAL);
+
+ /* Bit[2] = 0 (default=1), disable dfd apb bus protect_en */
+ mmio_clrbits_32(DFD_O_INTRF_MCU_PWR_CTL_MASK, 0x1 << 2);
+
+ /* Bit[0] : enable?mcusys_vproc?external_off?dfd?trigger -> 1 */
+ mmio_setbits_32(DFD_V50_GROUP_0_63_DIFF, 0x1);
+
+ /* bit[0]: rg_rw_dfd_internal_dump_en -> 1 */
+ /* bit[2]: rg_rw_dfd_clock_stop_en -> 1 */
+ sync_writel(DFD_INTERNAL_CTL, 0x5);
+
+ /* bit[13]: xreset_b_update_disable */
+ mmio_setbits_32(DFD_INTERNAL_CTL, 0x1 << 13);
+
+ /*
+ * bit[10:3]: DFD trigger selection mask
+ * bit[3]: rg_rw_dfd_trigger_sel[0] = 1(enable wdt trigger)
+ * bit[4]: rg_rw_dfd_trigger_sel[1] = 1(enable HW trigger)
+ * bit[5]: rg_rw_dfd_trigger_sel[2] = 1(enable SW trigger)
+ * bit[6]: rg_rw_dfd_trigger_sel[3] = 1(enable SW non-security trigger)
+ * bit[7]: rg_rw_dfd_trigger_sel[4] = 1(enable timer trigger)
+ */
+ mmio_setbits_32(DFD_INTERNAL_CTL, 0x1F << 3);
+
+ /*
+ * bit[9] : rg_rw_dfd_trigger_sel[6] = 1(cpu_eb_sw_dfd_trigger)
+ * bit[10] : rg_rw_dfd_trigger_sel[7] = 1(cpu_eb_wdt_dfd_trigger)
+ */
+ mmio_setbits_32(DFD_INTERNAL_CTL, 0x3 << 9);
+
+ /* bit[20:19]: rg_dfd_armpll_div_mux_sel switch to PLL2 for DFD */
+ mmio_setbits_32(DFD_INTERNAL_CTL, 0x3 << 19);
+
+ /*
+ * bit[0]: rg_rw_dfd_auto_power_on = 1
+ * bit[2:1]: rg_rw_dfd_auto_power_on_dely = 1(10us)
+ * bit[4:2]: rg_rw_dfd_power_on_wait_time = 1(20us)
+ */
+ mmio_write_32(DFD_INTERNAL_PWR_ON, 0xB);
+
+ /* longest scan chain length */
+ mmio_write_32(DFD_CHAIN_LENGTH0, chain_length);
+
+ /* bit[1:0]: rg_rw_dfd_shift_clock_ratio */
+ mmio_write_32(DFD_INTERNAL_SHIFT_CLK_RATIO, 0x0);
+
+ /* rg_dfd_test_so_over_64 */
+ mmio_write_32(DFD_INTERNAL_TEST_SO_OVER_64, 0x1);
+
+ /* DFD3.0 */
+ mmio_write_32(DFD_TEST_SI_0, 0x0);
+ mmio_write_32(DFD_TEST_SI_1, 0x0);
+ mmio_write_32(DFD_TEST_SI_2, 0x0);
+ mmio_write_32(DFD_TEST_SI_3, 0x0);
+
+ /* for iLDO feature */
+ sync_writel(DFD_POWER_CTL, 0xF9);
+
+ /* read offset */
+ sync_writel(DFD_READ_ADDR, DFD_READ_ADDR_VAL);
+
+ /* for DFD-3.0 setup */
+ sync_writel(DFD_V30_CTL, 0xD);
+
+ /* set base address */
+ mmio_write_32(DFD_O_SET_BASEADDR_REG, base_addr >> 24);
+ mmio_write_32(DFD_O_REG_0, 0);
+
+ /* setup global variables for suspend and resume */
+ dfd_enabled = true;
+ dfd_base_addr = base_addr;
+ dfd_chain_length = chain_length;
+ dfd_cache_dump = cache_dump;
+
+ if ((cache_dump & DFD_CACHE_DUMP_ENABLE) != 0UL) {
+ mmio_write_32(MTK_DRM_LATCH_CTL2, MTK_DRM_LATCH_CTL2_CACHE_VAL);
+ sync_writel(DFD_V35_ENABLE, 0x1);
+ sync_writel(DFD_V35_TAP_NUMBER, 0xB);
+ sync_writel(DFD_V35_TAP_EN, DFD_V35_TAP_EN_VAL);
+ sync_writel(DFD_V35_SEQ0_0, DFD_V35_SEQ0_0_VAL);
+
+ /* Cache dump only mode */
+ sync_writel(DFD_V35_CTL, 0x1);
+ mmio_write_32(DFD_INTERNAL_NUM_OF_TEST_SO_GROUP, 0xF);
+ mmio_write_32(DFD_CHAIN_LENGTH0, DFD_CHAIN_LENGTH_VAL);
+ mmio_write_32(DFD_CHAIN_LENGTH1, DFD_CHAIN_LENGTH_VAL);
+ mmio_write_32(DFD_CHAIN_LENGTH2, DFD_CHAIN_LENGTH_VAL);
+ mmio_write_32(DFD_CHAIN_LENGTH3, DFD_CHAIN_LENGTH_VAL);
+
+ if ((cache_dump & DFD_PARITY_ERR_TRIGGER) != 0UL) {
+ sync_writel(DFD_HW_TRIGGER_MASK, 0xC);
+ mmio_setbits_32(DFD_INTERNAL_CTL, 0x1 << 4);
+ }
+ }
+ dsbsy();
+}
+
+void dfd_resume(void)
+{
+ if (dfd_enabled == true) {
+ dfd_setup(dfd_base_addr, dfd_chain_length, dfd_cache_dump);
+ }
+}
+
+uint64_t dfd_smc_dispatcher(uint64_t arg0, uint64_t arg1,
+ uint64_t arg2, uint64_t arg3)
+{
+ uint64_t ret = 0L;
+
+ switch (arg0) {
+ case PLAT_MTK_DFD_SETUP_MAGIC:
+ INFO("[%s] DFD setup call from kernel\n", __func__);
+ dfd_setup(arg1, arg2, arg3);
+ break;
+ case PLAT_MTK_DFD_READ_MAGIC:
+ /* only allow to access DFD register base + 0x200 */
+ if (arg1 <= 0x200) {
+ ret = mmio_read_32(MISC1_CFG_BASE + arg1);
+ }
+ break;
+ case PLAT_MTK_DFD_WRITE_MAGIC:
+ /* only allow to access DFD register base + 0x200 */
+ if (arg1 <= 0x200) {
+ sync_writel(MISC1_CFG_BASE + arg1, arg2);
+ }
+ break;
+ default:
+ ret = MTK_SIP_E_INVALID_PARAM;
+ break;
+ }
+
+ return ret;
+}
diff --git a/plat/mediatek/mt8195/drivers/dfd/plat_dfd.h b/plat/mediatek/mt8195/drivers/dfd/plat_dfd.h
new file mode 100644
index 0000000..2a7e979
--- /dev/null
+++ b/plat/mediatek/mt8195/drivers/dfd/plat_dfd.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLAT_DFD_H
+#define PLAT_DFD_H
+
+#include <arch_helpers.h>
+#include <lib/mmio.h>
+#include <platform_def.h>
+
+#define sync_writel(addr, val) do { mmio_write_32((addr), (val)); \
+ dsbsy(); \
+ } while (0)
+
+#define PLAT_MTK_DFD_SETUP_MAGIC (0x99716150)
+#define PLAT_MTK_DFD_READ_MAGIC (0x99716151)
+#define PLAT_MTK_DFD_WRITE_MAGIC (0x99716152)
+
+#define MTK_DRM_LATCH_CTL1 (DRM_BASE + 0x40)
+#define MTK_DRM_LATCH_CTL2 (DRM_BASE + 0x44)
+
+#define MTK_WDT_BASE (RGU_BASE)
+#define MTK_WDT_INTERVAL (MTK_WDT_BASE + 0x10)
+#define MTK_WDT_LATCH_CTL2 (MTK_WDT_BASE + 0x48)
+
+#define MCU_BIU_BASE (MCUCFG_BASE)
+#define MISC1_CFG_BASE (MCU_BIU_BASE + 0xE040)
+#define DFD_INTERNAL_CTL (MISC1_CFG_BASE + 0x00)
+#define DFD_INTERNAL_PWR_ON (MISC1_CFG_BASE + 0x08)
+#define DFD_CHAIN_LENGTH0 (MISC1_CFG_BASE + 0x0C)
+#define DFD_INTERNAL_SHIFT_CLK_RATIO (MISC1_CFG_BASE + 0x10)
+#define DFD_CHAIN_LENGTH1 (MISC1_CFG_BASE + 0x1C)
+#define DFD_CHAIN_LENGTH2 (MISC1_CFG_BASE + 0x20)
+#define DFD_CHAIN_LENGTH3 (MISC1_CFG_BASE + 0x24)
+#define DFD_INTERNAL_TEST_SO_0 (MISC1_CFG_BASE + 0x28)
+#define DFD_INTERNAL_NUM_OF_TEST_SO_GROUP (MISC1_CFG_BASE + 0x30)
+#define DFD_INTERNAL_TEST_SO_OVER_64 (MISC1_CFG_BASE + 0x34)
+#define DFD_INTERNAL_SW_NS_TRIGGER (MISC1_CFG_BASE + 0x3c)
+#define DFD_V30_CTL (MISC1_CFG_BASE + 0x48)
+#define DFD_V30_BASE_ADDR (MISC1_CFG_BASE + 0x4C)
+#define DFD_POWER_CTL (MISC1_CFG_BASE + 0x50)
+#define DFD_TEST_SI_0 (MISC1_CFG_BASE + 0x58)
+#define DFD_TEST_SI_1 (MISC1_CFG_BASE + 0x5C)
+#define DFD_CLEAN_STATUS (MISC1_CFG_BASE + 0x60)
+#define DFD_TEST_SI_2 (MISC1_CFG_BASE + 0x1D8)
+#define DFD_TEST_SI_3 (MISC1_CFG_BASE + 0x1DC)
+#define DFD_READ_ADDR (MISC1_CFG_BASE + 0x1E8)
+#define DFD_HW_TRIGGER_MASK (MISC1_CFG_BASE + 0xBC)
+
+#define DFD_V35_ENABLE (MCU_BIU_BASE + 0xE0A8)
+#define DFD_V35_TAP_NUMBER (MCU_BIU_BASE + 0xE0AC)
+#define DFD_V35_TAP_EN (MCU_BIU_BASE + 0xE0B0)
+#define DFD_V35_CTL (MCU_BIU_BASE + 0xE0B4)
+#define DFD_V35_SEQ0_0 (MCU_BIU_BASE + 0xE0C0)
+#define DFD_V35_SEQ0_1 (MCU_BIU_BASE + 0xE0C4)
+#define DFD_V50_GROUP_0_63_DIFF (MCU_BIU_BASE + 0xE2AC)
+
+#define DFD_O_PROTECT_EN_REG (0x10001220)
+#define DFD_O_INTRF_MCU_PWR_CTL_MASK (0x10001A3C)
+#define DFD_O_SET_BASEADDR_REG (0x10043000)
+#define DFD_O_REG_0 (0x10001390)
+
+#define DFD_CACHE_DUMP_ENABLE 1U
+#define DFD_PARITY_ERR_TRIGGER 2U
+
+#define DFD_V35_TAP_EN_VAL (0x43FF)
+#define DFD_V35_SEQ0_0_VAL (0x63668820)
+#define DFD_READ_ADDR_VAL (0x40000008)
+#define DFD_CHAIN_LENGTH_VAL (0xFFFFFFFF)
+
+#define MTK_WDT_LATCH_CTL2_VAL (0x9507FFFF)
+#define MTK_WDT_INTERVAL_VAL (0x6600000A)
+#define MTK_DRM_LATCH_CTL2_VAL (0x950600C8)
+#define MTK_DRM_LATCH_CTL2_CACHE_VAL (0x95065DC0)
+
+#define MTK_DRM_LATCH_CTL1_VAL (0x95000013)
+
+void dfd_resume(void);
+uint64_t dfd_smc_dispatcher(uint64_t arg0, uint64_t arg1,
+ uint64_t arg2, uint64_t arg3);
+
+#endif /* PLAT_DFD_H */
diff --git a/plat/mediatek/mt8195/include/plat_sip_calls.h b/plat/mediatek/mt8195/include/plat_sip_calls.h
index 181aec0..ce25c6f 100644
--- a/plat/mediatek/mt8195/include/plat_sip_calls.h
+++ b/plat/mediatek/mt8195/include/plat_sip_calls.h
@@ -10,7 +10,11 @@
/*******************************************************************************
* Plat SiP function constants
******************************************************************************/
-#define MTK_PLAT_SIP_NUM_CALLS 2
+#define MTK_PLAT_SIP_NUM_CALLS 4
+
+/* DFD */
+#define MTK_SIP_KERNEL_DFD_AARCH32 0x82000205
+#define MTK_SIP_KERNEL_DFD_AARCH64 0xC2000205
/* DP/eDP */
#define MTK_SIP_DP_CONTROL_AARCH32 0x82000523
diff --git a/plat/mediatek/mt8195/include/platform_def.h b/plat/mediatek/mt8195/include/platform_def.h
index 44de8eb..68301d6 100644
--- a/plat/mediatek/mt8195/include/platform_def.h
+++ b/plat/mediatek/mt8195/include/platform_def.h
@@ -24,7 +24,9 @@
#define TOPCKGEN_BASE (IO_PHYS + 0x00000000)
#define INFRACFG_AO_BASE (IO_PHYS + 0x00001000)
#define SPM_BASE (IO_PHYS + 0x00006000)
+#define RGU_BASE (IO_PHYS + 0x00007000)
#define APMIXEDSYS (IO_PHYS + 0x0000C000)
+#define DRM_BASE (IO_PHYS + 0x0000D000)
#define SSPM_MBOX_BASE (IO_PHYS + 0x00480000)
#define PERICFG_AO_BASE (IO_PHYS + 0x01003000)
#define VPPSYS0_BASE (IO_PHYS + 0x04000000)
diff --git a/plat/mediatek/mt8195/plat_pm.c b/plat/mediatek/mt8195/plat_pm.c
index 2beeb02..b77ab27 100644
--- a/plat/mediatek/mt8195/plat_pm.c
+++ b/plat/mediatek/mt8195/plat_pm.c
@@ -17,6 +17,7 @@
#include <mtk_ptp3_common.h>
#include <mtspmc.h>
#include <plat/common/platform.h>
+#include <plat_dfd.h>
#include <plat_mtk_lpm.h>
#include <plat_params.h>
#include <plat_pm.h>
@@ -166,6 +167,8 @@
mt_gic_distif_restore();
gic_sgi_restore_all();
+ dfd_resume();
+
plat_mt_pm_invoke_no_check(pwr_mcusys_on_finished, cpu, state);
}
diff --git a/plat/mediatek/mt8195/plat_sip_calls.c b/plat/mediatek/mt8195/plat_sip_calls.c
index ee36898..ddc7502 100644
--- a/plat/mediatek/mt8195/plat_sip_calls.c
+++ b/plat/mediatek/mt8195/plat_sip_calls.c
@@ -10,6 +10,7 @@
#include <mt_spm.h>
#include <mt_spm_vcorefs.h>
#include <mtk_sip_svc.h>
+#include <plat_dfd.h>
#include "plat_sip_calls.h"
uintptr_t mediatek_plat_sip_handler(uint32_t smc_fid,
@@ -35,6 +36,11 @@
ret = spm_vcorefs_v2_args(x1, x2, x3, &x4);
SMC_RET2(handle, ret, x4);
break;
+ case MTK_SIP_KERNEL_DFD_AARCH32:
+ case MTK_SIP_KERNEL_DFD_AARCH64:
+ ret = dfd_smc_dispatcher(x1, x2, x3, x4);
+ SMC_RET1(handle, ret);
+ break;
default:
ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
break;
diff --git a/plat/mediatek/mt8195/platform.mk b/plat/mediatek/mt8195/platform.mk
index 48a2f72..ef7ff81 100644
--- a/plat/mediatek/mt8195/platform.mk
+++ b/plat/mediatek/mt8195/platform.mk
@@ -15,6 +15,7 @@
-I${MTK_PLAT}/common/drivers/uart/ \
-I${MTK_PLAT}/common/lpm/ \
-I${MTK_PLAT_SOC}/drivers/dcm \
+ -I${MTK_PLAT_SOC}/drivers/dfd \
-I${MTK_PLAT_SOC}/drivers/dp/ \
-I${MTK_PLAT_SOC}/drivers/emi_mpu/ \
-I${MTK_PLAT_SOC}/drivers/gpio/ \
@@ -60,6 +61,7 @@
${MTK_PLAT_SOC}/bl31_plat_setup.c \
${MTK_PLAT_SOC}/drivers/dcm/mtk_dcm.c \
${MTK_PLAT_SOC}/drivers/dcm/mtk_dcm_utils.c \
+ ${MTK_PLAT_SOC}/drivers/dfd/plat_dfd.c \
${MTK_PLAT_SOC}/drivers/dp/mt_dp.c \
${MTK_PLAT_SOC}/drivers/emi_mpu/emi_mpu.c \
${MTK_PLAT_SOC}/drivers/gpio/mtgpio.c \