lib: Simplify sbi_platform ipi_init() hooks

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

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

include/sbi/sbi_ipi.h

@@ -26,8 +26,6 @@ void sbi_ipi_clear_smode(struct sbi_scratch *scratch, u32 hartid);
 
 void sbi_ipi_process(struct sbi_scratch *scratch, u32 hartid);
 
-int sbi_ipi_warm_init(struct sbi_scratch *scratch, u32 hartid);
+int sbi_ipi_init(struct sbi_scratch *scratch, u32 hartid, bool cold_boot);
-
-int sbi_ipi_cold_init(struct sbi_scratch *scratch);
 
 #endif

include/sbi/sbi_platform.h

@@ -46,8 +46,7 @@ struct sbi_platform {
 	void (*ipi_inject)(u32 target_hart, u32 source_hart);
 	void (*ipi_sync)(u32 target_hart, u32 source_hart);
 	void (*ipi_clear)(u32 target_hart);
-	int (*cold_ipi_init)(void);
+	int (*ipi_init)(u32 hartid, bool cold_boot);
-	int (*warm_ipi_init)(u32 target_hart);
 	u64 (*timer_value)(void);
 	void (*timer_event_stop)(u32 target_hart);
 	void (*timer_event_start)(u32 target_hart, u64 next_event);
@@ -187,18 +186,11 @@ static inline void sbi_platform_ipi_clear(struct sbi_platform *plat,
 		plat->ipi_clear(target_hart);
 }
 
-static inline int sbi_platform_warm_ipi_init(struct sbi_platform *plat,
+static inline int sbi_platform_ipi_init(struct sbi_platform *plat,
-					     u32 target_hart)
+					u32 hartid, bool cold_boot)
 {
-	if (plat && plat->warm_ipi_init)
+	if (plat && plat->ipi_init)
-		return plat->warm_ipi_init(target_hart);
+		return plat->ipi_init(hartid, cold_boot);
-	return 0;
-}
-
-static inline int sbi_platform_cold_ipi_init(struct sbi_platform *plat)
-{
-	if (plat && plat->cold_ipi_init)
-		return plat->cold_ipi_init();
 	return 0;
 }
 

lib/sbi_init.c

@@ -50,11 +50,7 @@ static void __attribute__((noreturn)) init_coldboot(struct sbi_scratch *scratch,
 	if (rc)
 		sbi_hart_hang();
 
-	rc = sbi_ipi_cold_init(scratch);
+	rc = sbi_ipi_init(scratch, hartid, TRUE);
-	if (rc)
-		sbi_hart_hang();
-
-	rc = sbi_ipi_warm_init(scratch, hartid);
 	if (rc)
 		sbi_hart_hang();
 
@@ -125,7 +121,7 @@ static void __attribute__((noreturn)) init_warmboot(struct sbi_scratch *scratch,
 	if (rc)
 		sbi_hart_hang();
 
-	rc = sbi_ipi_warm_init(scratch, hartid);
+	rc = sbi_ipi_init(scratch, hartid, FALSE);
 	if (rc)
 		sbi_hart_hang();
 

lib/sbi_ipi.c

@@ -68,15 +68,11 @@ void sbi_ipi_process(struct sbi_scratch *scratch, u32 hartid)
 	scratch->ipi_type = 0;
 }
 
-int sbi_ipi_warm_init(struct sbi_scratch *scratch, u32 hartid)
+int sbi_ipi_init(struct sbi_scratch *scratch, u32 hartid, bool cold_boot)
 {
 	/* Enable software interrupts */
 	csr_set(mie, MIP_MSIP);
 
-	return sbi_platform_warm_ipi_init(sbi_platform_ptr(scratch), hartid);
+	return sbi_platform_ipi_init(sbi_platform_ptr(scratch),
-}
+				     hartid, cold_boot);
-
-int sbi_ipi_cold_init(struct sbi_scratch *scratch)
-{
-	return sbi_platform_cold_ipi_init(sbi_platform_ptr(scratch));
 }

platform/kendryte/k210/platform.c

@@ -52,9 +52,18 @@ static int k210_irqchip_init(u32 hartid, bool cold_boot)
 				      (2 * hartid + 1));
 }
 
-static int k210_cold_ipi_init(void)
+static int k210_ipi_init(u32 hartid, bool cold_boot)
 {
-	return clint_cold_ipi_init(CLINT_BASE_ADDR, K210_HART_COUNT);
+	int rc;
+
+	if (cold_boot) {
+		rc = clint_cold_ipi_init(CLINT_BASE_ADDR,
+					 K210_HART_COUNT);
+		if (rc)
+			return rc;
+	}
+
+	return clint_warm_ipi_init(hartid);
 }
 
 static int k210_cold_timer_init(void)
@@ -93,8 +102,7 @@ struct sbi_platform platform = {
 
 	.irqchip_init = k210_irqchip_init,
 
-	.cold_ipi_init = k210_cold_ipi_init,
+	.ipi_init = k210_ipi_init,
-	.warm_ipi_init = clint_warm_ipi_init,
 	.ipi_inject = clint_ipi_inject,
 	.ipi_sync = clint_ipi_sync,
 	.ipi_clear = clint_ipi_clear,

platform/qemu/sifive_u/platform.c

@@ -91,10 +91,18 @@ static int sifive_u_irqchip_init(u32 hartid, bool cold_boot)
 				      (2 * hartid + 1));
 }
 
-static int sifive_u_cold_ipi_init(void)
+static int sifive_u_ipi_init(u32 hartid, bool cold_boot)
 {
-	return clint_cold_ipi_init(SIFIVE_U_CLINT_ADDR,
+	int rc;
+
+	if (cold_boot) {
+		rc = clint_cold_ipi_init(SIFIVE_U_CLINT_ADDR,
 					 SIFIVE_U_HART_COUNT);
+		if (rc)
+			return rc;
+	}
+
+	return clint_warm_ipi_init(hartid);
 }
 
 static int sifive_u_cold_timer_init(void)
@@ -125,8 +133,7 @@ struct sbi_platform platform = {
 	.ipi_inject = clint_ipi_inject,
 	.ipi_sync = clint_ipi_sync,
 	.ipi_clear = clint_ipi_clear,
-	.warm_ipi_init = clint_warm_ipi_init,
+	.ipi_init = sifive_u_ipi_init,
-	.cold_ipi_init = sifive_u_cold_ipi_init,
 	.timer_value = clint_timer_value,
 	.timer_event_stop = clint_timer_event_stop,
 	.timer_event_start = clint_timer_event_start,

platform/qemu/virt/platform.c

@@ -92,10 +92,18 @@ static int virt_irqchip_init(u32 hartid, bool cold_boot)
 				      (2 * hartid + 1));
 }
 
-static int virt_cold_ipi_init(void)
+static int virt_ipi_init(u32 hartid, bool cold_boot)
 {
-	return clint_cold_ipi_init(VIRT_CLINT_ADDR,
+	int rc;
+
+	if (cold_boot) {
+		rc = clint_cold_ipi_init(VIRT_CLINT_ADDR,
 					 VIRT_HART_COUNT);
+		if (rc)
+			return rc;
+	}
+
+	return clint_warm_ipi_init(hartid);
 }
 
 static int virt_cold_timer_init(void)
@@ -126,8 +134,7 @@ struct sbi_platform platform = {
 	.ipi_inject = clint_ipi_inject,
 	.ipi_sync = clint_ipi_sync,
 	.ipi_clear = clint_ipi_clear,
-	.warm_ipi_init = clint_warm_ipi_init,
+	.ipi_init = virt_ipi_init,
-	.cold_ipi_init = virt_cold_ipi_init,
 	.timer_value = clint_timer_value,
 	.timer_event_stop = clint_timer_event_stop,
 	.timer_event_start = clint_timer_event_start,

platform/sifive/hifive_u540/platform.c

@@ -111,10 +111,19 @@ static int sifive_u_irqchip_init(u32 hartid, bool cold_boot)
 			(hartid) ? (2 * hartid) : -1);
 }
 
-static int sifive_u_cold_ipi_init(void)
+static int sifive_u_ipi_init(u32 hartid, bool cold_boot)
 {
-	return clint_cold_ipi_init(SIFIVE_U_CLINT_ADDR,
+	int rc;
+
+	if (cold_boot) {
+		rc = clint_cold_ipi_init(SIFIVE_U_CLINT_ADDR,
 					 SIFIVE_U_HART_COUNT);
+		if (rc)
+			return rc;
+
+	}
+
+	return clint_warm_ipi_init(hartid);
 }
 
 static int sifive_u_cold_timer_init(void)
@@ -145,8 +154,7 @@ struct sbi_platform platform = {
 	.ipi_inject = clint_ipi_inject,
 	.ipi_sync = clint_ipi_sync,
 	.ipi_clear = clint_ipi_clear,
-	.warm_ipi_init = clint_warm_ipi_init,
+	.ipi_init = sifive_u_ipi_init,
-	.cold_ipi_init = sifive_u_cold_ipi_init,
 	.timer_value = clint_timer_value,
 	.timer_event_stop = clint_timer_event_stop,
 	.timer_event_start = clint_timer_event_start,