From 9a561753ce48def18dbc4aa278c685c93ed0a77d Mon Sep 17 00:00:00 2001
From: "macro.wave.z@gmail.com" <macro.wave.z@gmail.com>
Date: Thu, 8 Dec 2016 11:58:25 +0800
Subject: ARMv8: Setup PSCI memory and device tree

Newly add ARMv8 PSCI needs to be initialized, be copied or reserved in right
place, this patch does all the setup steps.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: York Sun <york.sun@nxp.com>

diff --git a/arch/arm/cpu/armv8/cpu-dt.c b/arch/arm/cpu/armv8/cpu-dt.c
index 659ec27..3a5afe8 100644
--- a/arch/arm/cpu/armv8/cpu-dt.c
+++ b/arch/arm/cpu/armv8/cpu-dt.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <asm/psci.h>
+#include <asm/system.h>
 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
 #include <asm/armv8/sec_firmware.h>
 #endif
@@ -13,7 +14,8 @@
 int psci_update_dt(void *fdt)
 {
 #ifdef CONFIG_MP
-#if defined(CONFIG_FSL_PPA_ARMV8_PSCI)
+#if defined(CONFIG_ARMV8_PSCI) || defined(CONFIG_FSL_PPA_ARMV8_PSCI)
+
 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
 	/*
 	 * If the PSCI in SEC Firmware didn't work, avoid to update the
@@ -25,6 +27,13 @@ int psci_update_dt(void *fdt)
 		return 0;
 #endif
 	fdt_psci(fdt);
+
+#if defined(CONFIG_ARMV8_PSCI) && !defined(CONFIG_ARMV8_SECURE_BASE)
+	/* secure code lives in RAM, keep it alive */
+	fdt_add_mem_rsv(fdt, (unsigned long)__secure_start,
+			__secure_end - __secure_start);
+#endif
+
 #endif
 #endif
 	return 0;
diff --git a/arch/arm/cpu/armv8/cpu.c b/arch/arm/cpu/armv8/cpu.c
index e06c3cc..5dcb5e2 100644
--- a/arch/arm/cpu/armv8/cpu.c
+++ b/arch/arm/cpu/armv8/cpu.c
@@ -14,6 +14,7 @@
 #include <common.h>
 #include <command.h>
 #include <asm/system.h>
+#include <asm/secure.h>
 #include <linux/compiler.h>
 
 int cleanup_before_linux(void)
@@ -41,3 +42,24 @@ int cleanup_before_linux(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_ARMV8_PSCI
+static void relocate_secure_section(void)
+{
+#ifdef CONFIG_ARMV8_SECURE_BASE
+	size_t sz = __secure_end - __secure_start;
+
+	memcpy((void *)CONFIG_ARMV8_SECURE_BASE, __secure_start, sz);
+	flush_dcache_range(CONFIG_ARMV8_SECURE_BASE,
+			   CONFIG_ARMV8_SECURE_BASE + sz + 1);
+	invalidate_icache_all();
+#endif
+}
+
+void armv8_setup_psci(void)
+{
+	relocate_secure_section();
+	secure_ram_addr(psci_setup_vectors)();
+	secure_ram_addr(psci_arch_init)();
+}
+#endif
diff --git a/arch/arm/include/asm/secure.h b/arch/arm/include/asm/secure.h
index 5a403bc..d23044a 100644
--- a/arch/arm/include/asm/secure.h
+++ b/arch/arm/include/asm/secure.h
@@ -6,7 +6,7 @@
 #define __secure __attribute__ ((section ("._secure.text")))
 #define __secure_data __attribute__ ((section ("._secure.data")))
 
-#ifdef CONFIG_ARMV7_SECURE_BASE
+#if defined(CONFIG_ARMV7_SECURE_BASE) || defined(CONFIG_ARMV8_SECURE_BASE)
 /*
  * Warning, horror ahead.
  *
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 01efc43..dc4c991 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -237,6 +237,17 @@ void smc_call(struct pt_regs *args);
 void __noreturn psci_system_reset(void);
 void __noreturn psci_system_off(void);
 
+#ifdef CONFIG_ARMV8_PSCI
+extern char __secure_start[];
+extern char __secure_end[];
+extern char __secure_stack_start[];
+extern char __secure_stack_end[];
+
+void armv8_setup_psci(void);
+void psci_setup_vectors(void);
+void psci_arch_init(void);
+#endif
+
 #endif	/* __ASSEMBLY__ */
 
 #else /* CONFIG_ARM64 */
diff --git a/arch/arm/lib/bootm-fdt.c b/arch/arm/lib/bootm-fdt.c
index 1615756..e261d4f 100644
--- a/arch/arm/lib/bootm-fdt.c
+++ b/arch/arm/lib/bootm-fdt.c
@@ -52,7 +52,8 @@ int arch_fixup_fdt(void *blob)
 		return ret;
 #endif
 
-#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_FSL_PPA_ARMV8_PSCI)
+#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV8_PSCI) || \
+	defined(CONFIG_FSL_PPA_ARMV8_PSCI)
 	ret = psci_update_dt(blob);
 	if (ret)
 		return ret;
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 4eee13a..43cc83e 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -316,6 +316,9 @@ static void boot_jump_linux(bootm_headers_t *images, int flag)
 	announce_and_cleanup(fake);
 
 	if (!fake) {
+#ifdef CONFIG_ARMV8_PSCI
+		armv8_setup_psci();
+#endif
 		do_nonsec_virt_switch();
 
 		update_os_arch_secondary_cores(images->os.arch);
diff --git a/arch/arm/lib/psci-dt.c b/arch/arm/lib/psci-dt.c
index 41e139e..45af037 100644
--- a/arch/arm/lib/psci-dt.c
+++ b/arch/arm/lib/psci-dt.c
@@ -16,7 +16,8 @@
 
 int fdt_psci(void *fdt)
 {
-#if defined(CONFIG_FSL_PPA_ARMV8_PSCI) || defined(CONFIG_ARMV7_PSCI)
+#if defined(CONFIG_ARMV7_PSCI) || defined(CONFIG_ARMV8_PSCI) || \
+	defined(CONFIG_FSL_PPA_ARMV8_PSCI)
 	int nodeoff;
 	unsigned int psci_ver = 0;
 	int tmp;
@@ -65,7 +66,7 @@ int fdt_psci(void *fdt)
 init_psci_node:
 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
 	psci_ver = sec_firmware_support_psci_version();
-#elif defined(CONFIG_ARMV7_PSCI_1_0)
+#elif defined(CONFIG_ARMV7_PSCI_1_0) || defined(CONFIG_ARMV8_PSCI)
 	psci_ver = ARM_PSCI_VER_1_0;
 #endif
 	switch (psci_ver) {
-- 
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