2 files changed, 103 insertions, 0 deletions
diff --git a/plat/rockchip/common/pmusram/cpus_on_fixed_addr.S b/plat/rockchip/common/pmusram/cpus_on_fixed_addr.S
new file mode 100644
index 0000000..6cea2ea
--- /dev/null
+++ b/plat/rockchip/common/pmusram/cpus_on_fixed_addr.S
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <platform_def.h>
+#include <cpus_on_fixed_addr.h>
+
+	.globl sys_sleep_flag_sram
+	.globl pmu_cpuson_entrypoint
+
+	.macro pmusram_entry_func _name
+	.section .pmusram.entry, "ax"
+	.type \_name, %function
+	.cfi_startproc
+	\_name:
+	.endm
+
+pmusram_entry_func pmu_cpuson_entrypoint
+	adr	x5, sys_sleep_flag_sram
+	ldr	w2, [x5, #PSRAM_DT_PM_FLAG]
+
+	tbz	w2, #PM_WARM_BOOT_SHT, sys_resume_sp
+	ldr	x1, =platform_cpu_warmboot
+	br	x1
+sys_resume_sp:
+	adr	x5, sys_sleep_flag_sram
+	ldr	x1, [x5, #PSRAM_DT_SP]
+	mov	sp, x1
+ddr_resume:
+	ldr	x1, [x5, #PSRAM_DT_DDR_FUNC]
+	cmp	x1, #0
+	b.eq	sys_resume
+	blr	x1
+sys_resume:
+	ldr	x1, =bl31_warm_entrypoint
+	br	x1
+endfunc pmu_cpuson_entrypoint
+
+	.section .pmusram.data, "a"
+	.align  3
+sys_sleep_flag_sram:
+	.rept	PSRAM_DT_SIZE_WORDS
+	.word	0
+	.endr
diff --git a/plat/rockchip/common/pmusram/cpus_on_fixed_addr.h b/plat/rockchip/common/pmusram/cpus_on_fixed_addr.h
new file mode 100644
index 0000000..bcd2a7c
--- /dev/null
+++ b/plat/rockchip/common/pmusram/cpus_on_fixed_addr.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __CPU_ON_FIXED_ADDR_H__
+#define __CPU_ON_FIXED_ADDR_H__
+
+/*****************************************************************************
+ * define data offset in struct psram_data
+ *****************************************************************************/
+#define PSRAM_DT_SP		0x0
+#define PSRAM_DT_DDR_FUNC	0x8
+#define PSRAM_DT_DDR_DATA	0x10
+#define PSRAM_DT_DDRFLAG	0x18
+#define PSRAM_DT_MPIDR		0x1c
+#define PSRAM_DT_PM_FLAG	0x20
+#define PSRAM_DT_END		0x24
+
+/* reserve 4 byte */
+#define PSRAM_DT_END_RES4	(PSRAM_DT_END + 4)
+
+#define PSRAM_DT_SIZE_WORDS	(PSRAM_DT_END_RES4 / 4)
+
+#define PM_WARM_BOOT_SHT	0
+#define PM_WARM_BOOT_BIT	(1 << PM_WARM_BOOT_SHT)
+
+#ifndef __ASSEMBLER__
+
+struct psram_data_t {
+	uint64_t sp;
+	uint64_t ddr_func;
+	uint64_t ddr_data;
+	uint32_t ddr_flag;
+	uint32_t boot_mpidr;
+	uint32_t pm_flag;
+};
+
+CASSERT(__builtin_offsetof(struct psram_data_t, sp) == PSRAM_DT_SP,
+	assert_psram_dt_sp_offset_mistmatch);
+CASSERT(__builtin_offsetof(struct psram_data_t, ddr_func) == PSRAM_DT_DDR_FUNC,
+	assert_psram_dt_ddr_func_offset_mistmatch);
+CASSERT(__builtin_offsetof(struct psram_data_t, ddr_data) == PSRAM_DT_DDR_DATA,
+	assert_psram_dt_ddr_data_offset_mistmatch);
+CASSERT(__builtin_offsetof(struct psram_data_t, ddr_flag) == PSRAM_DT_DDRFLAG,
+	assert_psram_dt_ddr_flag_offset_mistmatch);
+CASSERT(__builtin_offsetof(struct psram_data_t, boot_mpidr) == PSRAM_DT_MPIDR,
+	assert_psram_dt_mpidr_offset_mistmatch);
+
+extern struct psram_data_t sys_sleep_flag_sram;
+
+#endif  /* __ASSEMBLER__ */
+
+#endif