feat(imx8mq): add the dram retention support for imx8mq
Add the dram retention support for i.MX8MQ. As there is
no enough ocram space available before entering TF-A,
so the timing info need to be copied from dram into ocram.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: Id8264c342fd62e297b1969cba5ed505450c78a25
diff --git a/plat/imx/imx8m/ddr/dram.c b/plat/imx/imx8m/ddr/dram.c
index 4a9f4ee..f5f9df7 100644
--- a/plat/imx/imx8m/ddr/dram.c
+++ b/plat/imx/imx8m/ddr/dram.c
@@ -20,6 +20,11 @@
/* lock used for DDR DVFS */
spinlock_t dfs_lock;
+#if defined(PLAT_imx8mq)
+/* ocram used to dram timing */
+static uint8_t dram_timing_saved[13 * 1024] __aligned(8);
+#endif
+
static volatile uint32_t wfe_done;
static volatile bool wait_ddrc_hwffc_done = true;
static unsigned int dev_fsp = 0x1;
@@ -30,6 +35,31 @@
{ DDRC_FREQ2_INIT3(0), DDRC_FREQ2_INIT4(0), DDRC_FREQ2_INIT6(0), DDRC_FREQ2_INIT7(0) },
};
+#if defined(PLAT_imx8mq)
+static inline struct dram_cfg_param *get_cfg_ptr(void *ptr,
+ void *old_base, void *new_base)
+{
+ uintptr_t offset = (uintptr_t)ptr & ~((uintptr_t)old_base);
+
+ return (struct dram_cfg_param *)(offset + new_base);
+}
+
+/* copy the dram timing info from DRAM to OCRAM */
+void imx8mq_dram_timing_copy(struct dram_timing_info *from)
+{
+ struct dram_timing_info *info = (struct dram_timing_info *)dram_timing_saved;
+
+ /* copy the whole 13KB content used for dram timing info */
+ memcpy(dram_timing_saved, from, sizeof(dram_timing_saved));
+
+ /* correct the header after copied into ocram */
+ info->ddrc_cfg = get_cfg_ptr(info->ddrc_cfg, from, dram_timing_saved);
+ info->ddrphy_cfg = get_cfg_ptr(info->ddrphy_cfg, from, dram_timing_saved);
+ info->ddrphy_trained_csr = get_cfg_ptr(info->ddrphy_trained_csr, from, dram_timing_saved);
+ info->ddrphy_pie = get_cfg_ptr(info->ddrphy_pie, from, dram_timing_saved);
+}
+#endif
+
#if defined(PLAT_imx8mp)
static uint32_t lpddr4_mr_read(unsigned int mr_rank, unsigned int mr_addr)
{
@@ -200,6 +230,10 @@
dram_info.boot_fsp = current_fsp;
dram_info.current_fsp = current_fsp;
+#if defined(PLAT_imx8mq)
+ imx8mq_dram_timing_copy((struct dram_timing_info *)dram_timing_base);
+ dram_timing_base = (unsigned long) dram_timing_saved;
+#endif
get_mr_values(dram_info.mr_table);
dram_info.timing_info = (struct dram_timing_info *)dram_timing_base;
diff --git a/plat/imx/imx8m/ddr/dram_retention.c b/plat/imx/imx8m/ddr/dram_retention.c
index 7572e86..983f6e2 100644
--- a/plat/imx/imx8m/ddr/dram_retention.c
+++ b/plat/imx/imx8m/ddr/dram_retention.c
@@ -23,8 +23,6 @@
#define CCM_CCGR(n) (CCM_CCGR_OFFSET + 0x10 * (n))
#define CCM_TARGET_ROOT(n) (CCM_TARGET_ROOT_OFFSET + 0x80 * (n))
-#define DRAM_PLL_CTRL (IMX_ANAMIX_BASE + 0x50)
-
#define DBGCAM_EMPTY 0x36000000
static void rank_setting_update(void)
diff --git a/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c b/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c
index 264d920..661f8e2 100644
--- a/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c
+++ b/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c
@@ -21,6 +21,7 @@
#include <lib/xlat_tables/xlat_tables_v2.h>
#include <plat/common/platform.h>
+#include <dram.h>
#include <gpc.h>
#include <imx_aipstz.h>
#include <imx_uart.h>
@@ -34,6 +35,8 @@
MAP_REGION_FLAT(IMX_ROM_BASE, IMX_ROM_SIZE, MT_MEMORY | MT_RO), /* ROM map */
MAP_REGION_FLAT(IMX_AIPS_BASE, IMX_AIPS_SIZE, MT_DEVICE | MT_RW), /* AIPS map */
MAP_REGION_FLAT(IMX_GIC_BASE, IMX_GIC_SIZE, MT_DEVICE | MT_RW), /* GIC map */
+ MAP_REGION_FLAT(IMX_DDRPHY_BASE, IMX_DDR_IPS_SIZE, MT_DEVICE | MT_RW), /* DDRMIX map */
+ MAP_REGION_FLAT(IMX_DRAM_BASE, IMX_DRAM_SIZE, MT_MEMORY | MT_RW | MT_NS),
{0},
};
@@ -212,6 +215,8 @@
/* gpc init */
imx_gpc_init();
+
+ dram_info_init(SAVED_DRAM_TIMING_BASE);
}
entry_point_info_t *bl31_plat_get_next_image_ep_info(unsigned int type)
diff --git a/plat/imx/imx8m/imx8mq/imx8mq_psci.c b/plat/imx/imx8m/imx8mq/imx8mq_psci.c
index 01582af..6209fea 100644
--- a/plat/imx/imx8m/imx8mq/imx8mq_psci.c
+++ b/plat/imx/imx8m/imx8mq/imx8mq_psci.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -12,6 +12,7 @@
#include <lib/mmio.h>
#include <lib/psci/psci.h>
+#include <dram.h>
#include <gpc.h>
#include <imx8m_psci.h>
#include <plat_imx8.h>
@@ -63,6 +64,7 @@
if (is_local_state_retn(SYSTEM_PWR_STATE(target_state))) {
imx_set_sys_lpm(core_id, true);
+ dram_enter_retention();
}
}
@@ -73,6 +75,7 @@
/* check the system level status */
if (is_local_state_retn(SYSTEM_PWR_STATE(target_state))) {
+ dram_exit_retention();
imx_set_sys_lpm(core_id, false);
imx_clear_rbc_count();
}
diff --git a/plat/imx/imx8m/imx8mq/include/platform_def.h b/plat/imx/imx8m/imx8mq/include/platform_def.h
index bb57074..2526a02 100644
--- a/plat/imx/imx8m/imx8mq/include/platform_def.h
+++ b/plat/imx/imx8m/imx8mq/include/platform_def.h
@@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-3-Clause
*/
+#include <lib/utils_def.h>
#include <plat/common/common_def.h>
#define PLATFORM_LINKER_FORMAT "elf64-littleaarch64"
@@ -82,6 +83,9 @@
#define IMX_DDRC_BASE U(0x3d400000)
#define IMX_DDRPHY_BASE U(0x3c000000)
#define IMX_DDR_IPS_BASE U(0x3d000000)
+#define IMX_DDR_IPS_SIZE U(0x1800000)
+#define IMX_DRAM_BASE U(0x40000000)
+#define IMX_DRAM_SIZE U(0xc0000000)
#define IMX_ROM_BASE U(0x00000000)
#define IMX_ROM_SIZE U(0x20000)
@@ -119,6 +123,12 @@
#define SNVS_LPCR_DP_EN BIT(5)
#define SNVS_LPCR_TOP BIT(6)
+#define SAVED_DRAM_TIMING_BASE U(0x40000000)
+
+#define HW_DRAM_PLL_CFG0 (IMX_ANAMIX_BASE + 0x60)
+#define HW_DRAM_PLL_CFG1 (IMX_ANAMIX_BASE + 0x64)
+#define HW_DRAM_PLL_CFG2 (IMX_ANAMIX_BASE + 0x68)
+#define DRAM_PLL_CTRL HW_DRAM_PLL_CFG0
#define IOMUXC_GPR10 U(0x28)
#define GPR_TZASC_EN BIT(0)
diff --git a/plat/imx/imx8m/imx8mq/platform.mk b/plat/imx/imx8m/imx8mq/platform.mk
index 901a974..284ccee 100644
--- a/plat/imx/imx8m/imx8mq/platform.mk
+++ b/plat/imx/imx8m/imx8mq/platform.mk
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2018-2022, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@@ -14,6 +14,12 @@
# Include GICv3 driver files
include drivers/arm/gic/v3/gicv3.mk
+IMX_DRAM_SOURCES := plat/imx/imx8m/ddr/dram.c \
+ plat/imx/imx8m/ddr/clock.c \
+ plat/imx/imx8m/ddr/dram_retention.c \
+ plat/imx/imx8m/ddr/ddr4_dvfs.c \
+ plat/imx/imx8m/ddr/lpddr4_dvfs.c
+
IMX_GIC_SOURCES := ${GICV3_SOURCES} \
plat/common/plat_gicv3.c \
plat/common/plat_psci_common.c \
@@ -36,6 +42,7 @@
drivers/delay_timer/delay_timer.c \
drivers/delay_timer/generic_delay_timer.c \
${XLAT_TABLES_LIB_SRCS} \
+ ${IMX_DRAM_SOURCES} \
${IMX_GIC_SOURCES}
ENABLE_PIE := 1