rockchip/rk3399: enable PMU_PERILP_PD_EN bit when suspend
with PMU_PERILP_PD_EN bit enable, the soc will shutdown
cm0, crypto, dcf, imem(normal SRAM), dmac, bootrom, efuse_con,
spi, i2c, uart, saradc, tsadc when suspend, we have M0 code
need to run when suspend in normal SRAM, so we need to take
care of that.
Change-Id: I8c066637e5b81d4b1d53197450b9d592cbe00793
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
diff --git a/plat/rockchip/common/include/plat_private.h b/plat/rockchip/common/include/plat_private.h
index f0aee08..b9540f2 100644
--- a/plat/rockchip/common/include/plat_private.h
+++ b/plat/rockchip/common/include/plat_private.h
@@ -24,7 +24,9 @@
extern uint32_t __bl31_sram_text_start, __bl31_sram_text_end;
extern uint32_t __bl31_sram_data_start, __bl31_sram_data_end;
extern uint32_t __bl31_sram_stack_start, __bl31_sram_stack_end;
+extern uint32_t __bl31_sram_text_real_end, __bl31_sram_data_real_end;
extern uint32_t __sram_incbin_start, __sram_incbin_end;
+extern uint32_t __sram_incbin_real_end;
/******************************************************************************
diff --git a/plat/rockchip/common/pmusram/pmu_sram_cpus_on.S b/plat/rockchip/common/pmusram/pmu_sram_cpus_on.S
index 64261ac..06dfea9 100644
--- a/plat/rockchip/common/pmusram/pmu_sram_cpus_on.S
+++ b/plat/rockchip/common/pmusram/pmu_sram_cpus_on.S
@@ -25,7 +25,7 @@
mov sp, x2
bl dmc_restore
#endif
-
+ bl sram_restore
sys_resume:
bl psci_entrypoint
endfunc pmu_cpuson_entrypoint
diff --git a/plat/rockchip/rk3368/drivers/pmu/pmu.c b/plat/rockchip/rk3368/drivers/pmu/pmu.c
index ad0b5ff..1767967 100644
--- a/plat/rockchip/rk3368/drivers/pmu/pmu.c
+++ b/plat/rockchip/rk3368/drivers/pmu/pmu.c
@@ -280,6 +280,16 @@
}
}
+void sram_save(void)
+{
+ /* TODO: support the sdram save for rk3368 SoCs*/
+}
+
+void sram_restore(void)
+{
+ /* TODO: support the sdram restore for rk3368 SoCs */
+}
+
int rockchip_soc_cores_pwr_dm_on(unsigned long mpidr, uint64_t entrypoint)
{
uint32_t cpu, cluster;
diff --git a/plat/rockchip/rk3399/drivers/pmu/pmu.c b/plat/rockchip/rk3399/drivers/pmu/pmu.c
index cf1ea48..f6c47f4 100644
--- a/plat/rockchip/rk3399/drivers/pmu/pmu.c
+++ b/plat/rockchip/rk3399/drivers/pmu/pmu.c
@@ -21,6 +21,7 @@
#include <rk3399_def.h>
#include <secure.h>
#include <soc.h>
+#include <string.h>
#include <pmu.h>
#include <pmu_com.h>
#include <pwm.h>
@@ -30,6 +31,7 @@
DEFINE_BAKERY_LOCK(rockchip_pd_lock);
static uint32_t cpu_warm_boot_addr;
+static char store_sram[SRAM_BIN_LIMIT + SRAM_TEXT_LIMIT + SRAM_DATA_LIMIT];
/*
* There are two ways to powering on or off on core.
@@ -760,14 +762,24 @@
mmio_write_32(PMU_BASE + PMU_CENTER_PWRUP_CNT, CYCL_24M_CNT_MS(1));
/*
+ * when we enable PMU_CLR_PERILP, it will shut down the SRAM, but
+ * M0 code run in SRAM, and we need it to check whether cpu enter
+ * FSM status, so we must wait M0 finish their code and enter WFI,
+ * then we can shutdown SRAM, according FSM order:
+ * ST_NORMAL->..->ST_SCU_L_PWRDN->..->ST_CENTER_PWRDN->ST_PERILP_PWRDN
+ * we can add delay when shutdown ST_SCU_L_PWRDN to guarantee M0 get
+ * the FSM status and enter WFI, then enable PMU_CLR_PERILP.
+ */
+ mmio_write_32(PMU_BASE + PMU_SCU_L_PWRDN_CNT, CYCL_24M_CNT_MS(5));
+ mmio_write_32(PMU_BASE + PMU_SCU_L_PWRUP_CNT, CYCL_24M_CNT_US(1));
+
+ /*
* Set CPU/GPU to 1 us.
*
* NOTE: Even though ATF doesn't configure the GPU we'll still setup
* counts here. After all ATF controls all these other bits and also
* chooses which clock these counters use.
*/
- mmio_write_32(PMU_BASE + PMU_SCU_L_PWRDN_CNT, CYCL_24M_CNT_US(1));
- mmio_write_32(PMU_BASE + PMU_SCU_L_PWRUP_CNT, CYCL_24M_CNT_US(1));
mmio_write_32(PMU_BASE + PMU_SCU_B_PWRDN_CNT, CYCL_24M_CNT_US(1));
mmio_write_32(PMU_BASE + PMU_SCU_B_PWRUP_CNT, CYCL_24M_CNT_US(1));
mmio_write_32(PMU_BASE + PMU_GPU_PWRDN_CNT, CYCL_24M_CNT_US(1));
@@ -815,6 +827,8 @@
BIT(PMU_DDRIO1_RET_EN) |
BIT(PMU_DDRIO_RET_HW_DE_REQ) |
BIT(PMU_CENTER_PD_EN) |
+ BIT(PMU_PERILP_PD_EN) |
+ BIT(PMU_CLK_PERILP_SRC_GATE_EN) |
BIT(PMU_PLL_PD_EN) |
BIT(PMU_CLK_CENTER_SRC_GATE_EN) |
BIT(PMU_OSC_DIS) |
@@ -1028,6 +1042,36 @@
mmio_write_32(M0_PARAM_ADDR + PARAM_M0_FUNC, M0_FUNC_SUSPEND);
}
+void sram_save(void)
+{
+ size_t text_size = (char *)&__bl31_sram_text_real_end -
+ (char *)&__bl31_sram_text_start;
+ size_t data_size = (char *)&__bl31_sram_data_real_end -
+ (char *)&__bl31_sram_data_start;
+ size_t incbin_size = (char *)&__sram_incbin_real_end -
+ (char *)&__sram_incbin_start;
+
+ memcpy(&store_sram[0], &__bl31_sram_text_start, text_size);
+ memcpy(&store_sram[text_size], &__bl31_sram_data_start, data_size);
+ memcpy(&store_sram[text_size + data_size], &__sram_incbin_start,
+ incbin_size);
+}
+
+void sram_restore(void)
+{
+ size_t text_size = (char *)&__bl31_sram_text_real_end -
+ (char *)&__bl31_sram_text_start;
+ size_t data_size = (char *)&__bl31_sram_data_real_end -
+ (char *)&__bl31_sram_data_start;
+ size_t incbin_size = (char *)&__sram_incbin_real_end -
+ (char *)&__sram_incbin_start;
+
+ memcpy(&__bl31_sram_text_start, &store_sram[0], text_size);
+ memcpy(&__bl31_sram_data_start, &store_sram[text_size], data_size);
+ memcpy(&__sram_incbin_start, &store_sram[text_size + data_size],
+ incbin_size);
+}
+
int rockchip_soc_sys_pwr_dm_suspend(void)
{
uint32_t wait_cnt = 0;
@@ -1045,6 +1089,8 @@
BIT(PMU_CLR_CCIM0) |
BIT(PMU_CLR_CCIM1) |
BIT(PMU_CLR_CENTER) |
+ BIT(PMU_CLR_PERILP) |
+ BIT(PMU_CLR_PERILPM0) |
BIT(PMU_CLR_GIC));
sys_slp_config();
@@ -1090,6 +1136,7 @@
suspend_apio();
suspend_gpio();
+ sram_save();
return 0;
}
@@ -1171,6 +1218,8 @@
BIT(PMU_CLR_CCIM0) |
BIT(PMU_CLR_CCIM1) |
BIT(PMU_CLR_CENTER) |
+ BIT(PMU_CLR_PERILP) |
+ BIT(PMU_CLR_PERILPM0) |
BIT(PMU_CLR_GIC));
plat_rockchip_gic_cpuif_enable();
diff --git a/plat/rockchip/rk3399/include/plat.ld.S b/plat/rockchip/rk3399/include/plat.ld.S
index 86ca049..c42d9a9 100644
--- a/plat/rockchip/rk3399/include/plat.ld.S
+++ b/plat/rockchip/rk3399/include/plat.ld.S
@@ -30,24 +30,33 @@
.incbin_sram : ALIGN(4096) {
__sram_incbin_start = .;
*(.sram.incbin)
+ __sram_incbin_real_end = .;
. = ALIGN(4096);
__sram_incbin_end = .;
} >SRAM
+ ASSERT((__sram_incbin_real_end - __sram_incbin_start) <=
+ SRAM_BIN_LIMIT, ".incbin_sram has exceeded its limit")
.text_sram : ALIGN(4096) {
__bl31_sram_text_start = .;
*(.sram.text)
*(.sram.rodata)
+ __bl31_sram_text_real_end = .;
. = ALIGN(4096);
__bl31_sram_text_end = .;
} >SRAM
+ ASSERT((__bl31_sram_text_real_end - __bl31_sram_text_start) <=
+ SRAM_TEXT_LIMIT, ".text_sram has exceeded its limit")
.data_sram : ALIGN(4096) {
__bl31_sram_data_start = .;
*(.sram.data)
+ __bl31_sram_data_real_end = .;
. = ALIGN(4096);
__bl31_sram_data_end = .;
} >SRAM
+ ASSERT((__bl31_sram_data_real_end - __bl31_sram_data_start) <=
+ SRAM_DATA_LIMIT, ".data_sram has exceeded its limit")
.stack_sram : ALIGN(4096) {
__bl31_sram_stack_start = .;
diff --git a/plat/rockchip/rk3399/include/shared/addressmap_shared.h b/plat/rockchip/rk3399/include/shared/addressmap_shared.h
index d72633e..fe23e56 100644
--- a/plat/rockchip/rk3399/include/shared/addressmap_shared.h
+++ b/plat/rockchip/rk3399/include/shared/addressmap_shared.h
@@ -9,6 +9,9 @@
#define SIZE_K(n) ((n) * 1024)
#define SIZE_M(n) ((n) * 1024 * 1024)
+#define SRAM_TEXT_LIMIT (4 * 1024)
+#define SRAM_DATA_LIMIT (4 * 1024)
+#define SRAM_BIN_LIMIT (4 * 1024)
/*
* The parts of the shared defined registers address with AP and M0,
