lib: Simplify sbi_platform early_init() and final_init() hooks

Instead of having separate early_init() and final_init() hooks
for cold and warm boot, this patch updates struct sbi_platform
to have just one early_init() and one final_init() hook. The
type of boot (cold or warm) is now a boolean flag parameter for
the updated early_init() and final_init() hooks.

Signed-off-by: Anup Patel <anup.patel@wdc.com>

include/sbi/sbi_platform.h

@@ -34,10 +34,8 @@ struct sbi_platform {
 	u32 hart_count;
 	u32 hart_stack_size;
 	u64 disabled_hart_mask;
-	int (*cold_early_init)(void);
-	int (*cold_final_init)(void);
-	int (*warm_early_init)(u32 target_hart);
-	int (*warm_final_init)(u32 target_hart);
+	int (*early_init)(u32 hartid, bool cold_boot);
+	int (*final_init)(u32 hartid, bool cold_boot);
 	u32 (*pmp_region_count)(u32 target_hart);
 	int (*pmp_region_info)(u32 target_hart, u32 index,
 			       ulong *prot, ulong *addr, ulong *log2size);
@@ -105,33 +103,19 @@ static inline u32 sbi_platform_hart_stack_size(struct sbi_platform *plat)
 	return 0;
 }
 
-static inline int sbi_platform_cold_early_init(struct sbi_platform *plat)
+static inline int sbi_platform_early_init(struct sbi_platform *plat,
+					  u32 hartid, bool cold_boot)
 {
-	if (plat && plat->cold_early_init)
-		return plat->cold_early_init();
+	if (plat && plat->early_init)
+		return plat->early_init(hartid, cold_boot);
 	return 0;
 }
 
-static inline int sbi_platform_cold_final_init(struct sbi_platform *plat)
+static inline int sbi_platform_final_init(struct sbi_platform *plat,
+					  u32 hartid, bool cold_boot)
 {
-	if (plat && plat->cold_final_init)
-		return plat->cold_final_init();
-	return 0;
-}
-
-static inline int sbi_platform_warm_early_init(struct sbi_platform *plat,
-					       u32 target_hart)
-{
-	if (plat && plat->warm_early_init)
-		return plat->warm_early_init(target_hart);
-	return 0;
-}
-
-static inline int sbi_platform_warm_final_init(struct sbi_platform *plat,
-					       u32 target_hart)
-{
-	if (plat && plat->warm_final_init)
-		return plat->warm_final_init(target_hart);
+	if (plat && plat->final_init)
+		return plat->final_init(hartid, cold_boot);
 	return 0;
 }
 

include/sbi/sbi_system.h

@@ -14,13 +14,11 @@
 
 struct sbi_scratch;
 
-int sbi_system_warm_early_init(struct sbi_scratch *scratch, u32 hartid);
+int sbi_system_early_init(struct sbi_scratch *scratch, u32 hartid,
+			  bool cold_boot);
 
-int sbi_system_warm_final_init(struct sbi_scratch *scratch, u32 hartid);
-
-int sbi_system_cold_early_init(struct sbi_scratch *scratch);
-
-int sbi_system_cold_final_init(struct sbi_scratch *scratch);
+int sbi_system_final_init(struct sbi_scratch *scratch, u32 hartid,
+			  bool cold_boot);
 
 void __attribute__((noreturn)) sbi_system_reboot(struct sbi_scratch *scratch,
 						 u32 type);

lib/sbi_init.c

@@ -34,11 +34,7 @@ static void __attribute__((noreturn)) init_coldboot(struct sbi_scratch *scratch,
 	char str[64];
 	struct sbi_platform *plat = sbi_platform_ptr(scratch);
 
-	rc = sbi_system_cold_early_init(scratch);
-	if (rc)
-		sbi_hart_hang();
-
-	rc = sbi_system_warm_early_init(scratch, hartid);
+	rc = sbi_system_early_init(scratch, hartid, TRUE);
 	if (rc)
 		sbi_hart_hang();
 
@@ -74,11 +70,7 @@ static void __attribute__((noreturn)) init_coldboot(struct sbi_scratch *scratch,
 	if (rc)
 		sbi_hart_hang();
 
-	rc = sbi_system_cold_final_init(scratch);
-	if (rc)
-		sbi_hart_hang();
-
-	rc = sbi_system_warm_final_init(scratch, hartid);
+	rc = sbi_system_final_init(scratch, hartid, TRUE);
 	if (rc)
 		sbi_hart_hang();
 
@@ -125,7 +117,7 @@ static void __attribute__((noreturn)) init_warmboot(struct sbi_scratch *scratch,
 	if (sbi_platform_hart_disabled(plat, hartid))
 		sbi_hart_hang();
 
-	rc = sbi_system_warm_early_init(scratch, hartid);
+	rc = sbi_system_early_init(scratch, hartid, FALSE);
 	if (rc)
 		sbi_hart_hang();
 
@@ -145,7 +137,7 @@ static void __attribute__((noreturn)) init_warmboot(struct sbi_scratch *scratch,
 	if (rc)
 		sbi_hart_hang();
 
-	rc = sbi_system_warm_final_init(scratch, hartid);
+	rc = sbi_system_final_init(scratch, hartid, FALSE);
 	if (rc)
 		sbi_hart_hang();
 

lib/sbi_system.c

@@ -11,24 +11,18 @@
 #include <sbi/sbi_platform.h>
 #include <sbi/sbi_system.h>
 
-int sbi_system_warm_early_init(struct sbi_scratch *scratch, u32 hartid)
+int sbi_system_early_init(struct sbi_scratch *scratch, u32 hartid,
+			  bool cold_boot)
 {
-	return sbi_platform_warm_early_init(sbi_platform_ptr(scratch), hartid);
+	return sbi_platform_early_init(sbi_platform_ptr(scratch),
+					hartid, cold_boot);
 }
 
-int sbi_system_warm_final_init(struct sbi_scratch *scratch, u32 hartid)
+int sbi_system_final_init(struct sbi_scratch *scratch, u32 hartid,
+			  bool cold_boot)
 {
-	return sbi_platform_warm_final_init(sbi_platform_ptr(scratch), hartid);
-}
-
-int sbi_system_cold_early_init(struct sbi_scratch *scratch)
-{
-	return sbi_platform_cold_early_init(sbi_platform_ptr(scratch));
-}
-
-int sbi_system_cold_final_init(struct sbi_scratch *scratch)
-{
-	return sbi_platform_cold_final_init(sbi_platform_ptr(scratch));
+	return sbi_platform_final_init(sbi_platform_ptr(scratch),
+					hartid, cold_boot);
 }
 
 void __attribute__((noreturn)) sbi_system_reboot(struct sbi_scratch *scratch,

platform/kendryte/k210/platform.c

@@ -102,8 +102,6 @@ struct sbi_platform platform = {
 	.timer_event_start = clint_timer_event_start,
 	.warm_timer_init = clint_warm_timer_init,
 
-	.cold_final_init = NULL,
-
 	.system_reboot = k210_system_reboot,
 	.system_shutdown = k210_system_shutdown
 };

platform/qemu/sifive_u/platform.c

@@ -29,11 +29,15 @@
 #define SIFIVE_U_UART0_ADDR			0x10013000
 #define SIFIVE_U_UART1_ADDR			0x10023000
 
-static int sifive_u_cold_final_init(void)
+static int sifive_u_final_init(u32 hartid, bool cold_boot)
 {
 	u32 i;
-	void *fdt = sbi_scratch_thishart_arg1_ptr();
+	void *fdt;
 
+	if (!cold_boot)
+		return 0;
+
+	fdt = sbi_scratch_thishart_arg1_ptr();
 	for (i = 0; i < SIFIVE_U_HART_COUNT; i++)
 		plic_fdt_fixup(fdt, "riscv,plic0", 2 * i);
 
@@ -110,7 +114,7 @@ struct sbi_platform platform = {
 	.disabled_hart_mask = 0,
 	.pmp_region_count = sifive_u_pmp_region_count,
 	.pmp_region_info = sifive_u_pmp_region_info,
-	.cold_final_init = sifive_u_cold_final_init,
+	.final_init = sifive_u_final_init,
 	.console_putc = sifive_uart_putc,
 	.console_getc = sifive_uart_getc,
 	.console_init = sifive_u_console_init,

platform/qemu/virt/platform.c

@@ -29,11 +29,15 @@
 #define VIRT_UART_BAUDRATE		115200
 #define VIRT_UART_SHIFTREG_ADDR		1843200
 
-static int virt_cold_final_init(void)
+static int virt_final_init(u32 hartid, bool cold_boot)
 {
 	u32 i;
-	void *fdt = sbi_scratch_thishart_arg1_ptr();
+	void *fdt;
 
+	if (!cold_boot)
+		return 0;
+
+	fdt = sbi_scratch_thishart_arg1_ptr();
 	for (i = 0; i < VIRT_HART_COUNT; i++)
 		plic_fdt_fixup(fdt, "riscv,plic0", 2 * i);
 
@@ -111,7 +115,7 @@ struct sbi_platform platform = {
 	.disabled_hart_mask = 0,
 	.pmp_region_count = virt_pmp_region_count,
 	.pmp_region_info = virt_pmp_region_info,
-	.cold_final_init = virt_cold_final_init,
+	.final_init = virt_final_init,
 	.console_putc = uart8250_putc,
 	.console_getc = uart8250_getc,
 	.console_init = virt_console_init,

platform/sifive/hifive_u540/platform.c

@@ -38,11 +38,15 @@
 #define SIFIVE_PRCI_CLKMUXSTATUSREG    		0x002C
 #define SIFIVE_PRCI_CLKMUX_STATUS_TLCLKSEL      (0x1 << 1)
 
-static int sifive_u_cold_final_init(void)
+static int sifive_u_final_init(u32 hartid, bool cold_boot)
 {
 	u32 i;
-	void *fdt = sbi_scratch_thishart_arg1_ptr();
+	void *fdt;
 
+	if (!cold_boot)
+		return 0;
+
+	fdt = sbi_scratch_thishart_arg1_ptr();
 	plic_fdt_fixup(fdt, "riscv,plic0", 0);
 	for (i = 1; i < SIFIVE_U_HART_COUNT; i++)
 		plic_fdt_fixup(fdt, "riscv,plic0", 2 * i - 1);
@@ -130,7 +134,7 @@ struct sbi_platform platform = {
 	.disabled_hart_mask = ~(1 << SIFIVE_U_HARITD_ENABLED),
 	.pmp_region_count = sifive_u_pmp_region_count,
 	.pmp_region_info = sifive_u_pmp_region_info,
-	.cold_final_init = sifive_u_cold_final_init,
+	.final_init = sifive_u_final_init,
 	.console_putc = sifive_uart_putc,
 	.console_getc = sifive_uart_getc,
 	.console_init = sifive_u_console_init,