Merge https://source.denx.de/u-boot/custodians/u-boot-riscv

- Reset improvements, enable coherence manager on ae350, k210 clk
  improvements, other fixes

5 files changed, 105 insertions, 7 deletions

diff --git a/arch/riscv/cpu/ax25/cpu.c b/arch/riscv/cpu/ax25/cpu.c
index f092600e14..c4c2de2ef0 100644
--- a/arch/riscv/cpu/ax25/cpu.c
+++ b/arch/riscv/cpu/ax25/cpu.c
@@ -9,6 +9,22 @@
 #include <cpu_func.h>
 #include <irq_func.h>
 #include <asm/cache.h>
+#include <asm/csr.h>
+
+#define CSR_MCACHE_CTL	0x7ca
+#define CSR_MMISC_CTL	0x7d0
+#define CSR_MARCHID		0xf12
+
+#define V5_MCACHE_CTL_IC_EN_OFFSET      0
+#define V5_MCACHE_CTL_DC_EN_OFFSET      1
+#define V5_MCACHE_CTL_DC_COHEN_OFFSET	19
+#define V5_MCACHE_CTL_DC_COHSTA_OFFSET	20
+
+#define V5_MCACHE_CTL_IC_EN		BIT(V5_MCACHE_CTL_IC_EN_OFFSET)
+#define V5_MCACHE_CTL_DC_EN				BIT(V5_MCACHE_CTL_DC_EN_OFFSET)
+#define V5_MCACHE_CTL_DC_COHEN_EN       BIT(V5_MCACHE_CTL_DC_COHEN_OFFSET)
+#define V5_MCACHE_CTL_DC_COHSTA_EN      BIT(V5_MCACHE_CTL_DC_COHSTA_OFFSET)
+
 
 /*
  * cleanup_before_linux() is called just before we call linux
@@ -27,3 +43,29 @@ int cleanup_before_linux(void)
 
 	return 0;
 }
+
+void harts_early_init(void)
+{
+	if (CONFIG_IS_ENABLED(RISCV_MMODE)) {
+		unsigned long long mcache_ctl_val = csr_read(CSR_MCACHE_CTL);
+
+		if (!(mcache_ctl_val & V5_MCACHE_CTL_DC_COHEN_EN))
+			mcache_ctl_val |= V5_MCACHE_CTL_DC_COHEN_EN;
+		if (!(mcache_ctl_val & V5_MCACHE_CTL_IC_EN))
+			mcache_ctl_val |= V5_MCACHE_CTL_IC_EN;
+		if (!(mcache_ctl_val & V5_MCACHE_CTL_DC_EN))
+			mcache_ctl_val |= V5_MCACHE_CTL_DC_EN;
+		csr_write(CSR_MCACHE_CTL, mcache_ctl_val);
+
+		/*
+		 * Check DC_COHEN_EN, if cannot write to mcache_ctl,
+		 * we assume this bitmap not support L2 CM
+		 */
+		mcache_ctl_val = csr_read(CSR_MCACHE_CTL);
+		if ((mcache_ctl_val & V5_MCACHE_CTL_DC_COHEN_EN)) {
+		/* Wait for DC_COHSTA bit be set */
+			while (!(mcache_ctl_val & V5_MCACHE_CTL_DC_COHSTA_EN))
+				mcache_ctl_val = csr_read(CSR_MCACHE_CTL);
+		}
+	}
+}
diff --git a/arch/riscv/cpu/cpu.c b/arch/riscv/cpu/cpu.c
index c894ac10b5..8e49b6d736 100644
--- a/arch/riscv/cpu/cpu.c
+++ b/arch/riscv/cpu/cpu.c
@@ -6,6 +6,7 @@
 #include <common.h>
 #include <cpu.h>
 #include <dm.h>
+#include <dm/lists.h>
 #include <init.h>
 #include <log.h>
 #include <asm/encoding.h>
@@ -138,7 +139,17 @@ int arch_cpu_init_dm(void)
 
 int arch_early_init_r(void)
 {
-	return riscv_cpu_probe();
+	int ret;
+
+	ret = riscv_cpu_probe();
+	if (ret)
+		return ret;
+
+	if (IS_ENABLED(CONFIG_SYSRESET_SBI))
+		device_bind_driver(gd->dm_root, "sbi-sysreset",
+				   "sbi-sysreset", NULL);
+
+	return 0;
 }
 
 /**
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 53ca316180..5030892b47 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -12,7 +12,6 @@
 #include <linux/types.h>
 
 enum sbi_ext_id {
-#ifdef CONFIG_SBI_V01
 	SBI_EXT_0_1_SET_TIMER = 0x0,
 	SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1,
 	SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2,
@@ -22,11 +21,12 @@ enum sbi_ext_id {
 	SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6,
 	SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7,
 	SBI_EXT_0_1_SHUTDOWN = 0x8,
-#endif
 	SBI_EXT_BASE = 0x10,
 	SBI_EXT_TIME = 0x54494D45,
 	SBI_EXT_IPI = 0x735049,
 	SBI_EXT_RFENCE = 0x52464E43,
+	SBI_EXT_HSM = 0x48534D,
+	SBI_EXT_SRST = 0x53525354,
 };
 
 enum sbi_ext_base_fid {
@@ -51,6 +51,41 @@ enum sbi_ext_rfence_fid {
 	SBI_EXT_RFENCE_REMOTE_FENCE_I = 0,
 	SBI_EXT_RFENCE_REMOTE_SFENCE_VMA,
 	SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID,
+	SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID,
+	SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA,
+	SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID,
+	SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA,
+};
+
+enum sbi_ext_hsm_fid {
+	SBI_EXT_HSM_HART_START = 0,
+	SBI_EXT_HSM_HART_STOP,
+	SBI_EXT_HSM_HART_STATUS,
+	SBI_EXT_HSM_HART_SUSPEND,
+};
+
+enum sbi_hsm_hart_status {
+	SBI_HSM_HART_STATUS_STARTED = 0,
+	SBI_HSM_HART_STATUS_STOPPED,
+	SBI_HSM_HART_STATUS_START_PENDING,
+	SBI_HSM_HART_STATUS_STOP_PENDING,
+	SBI_HSM_HART_STATUS_SUSPEND_PENDING,
+	SBI_HSM_HART_STATUS_RESUME_PENDING,
+};
+
+enum sbi_ext_srst_fid {
+	SBI_EXT_SRST_RESET = 0,
+};
+
+enum sbi_srst_reset_type {
+	SBI_SRST_RESET_TYPE_SHUTDOWN = 0,
+	SBI_SRST_RESET_TYPE_COLD_REBOOT,
+	SBI_SRST_RESET_TYPE_WARM_REBOOT,
+};
+
+enum sbi_srst_reset_reason {
+	SBI_SRST_RESET_REASON_NONE = 0,
+	SBI_SRST_RESET_REASON_SYS_FAILURE,
 };
 
 #ifdef CONFIG_SBI_V01
@@ -118,5 +153,6 @@ void sbi_set_timer(uint64_t stime_value);
 long sbi_get_spec_version(void);
 int sbi_get_impl_id(void);
 int sbi_probe_extension(int ext);
+void sbi_srst_reset(unsigned long type, unsigned long reason);
 
 #endif
diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c
index f636b28449..61cf893526 100644
--- a/arch/riscv/lib/fdt_fixup.c
+++ b/arch/riscv/lib/fdt_fixup.c
@@ -31,7 +31,6 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst)
 	fdt_addr_t addr;
 	fdt_size_t size;
 	int offset, node, err, rmem_offset;
-	bool nomap = true;
 	char basename[32] = {0};
 	int bname_len;
 	int max_len = sizeof(basename);
@@ -81,9 +80,7 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst)
 			log_err("failed to add reserved memory: %d\n", err);
 			return err;
 		}
-		if (!fdt_getprop(src, node, "no-map", NULL))
-			nomap = false;
-		if (nomap) {
+		if (fdt_getprop(src, node, "no-map", NULL)) {
 			rmem_offset = fdt_node_offset_by_phandle(dst, phandle);
 			fdt_setprop_empty(dst, rmem_offset, "no-map");
 		}
diff --git a/arch/riscv/lib/sbi.c b/arch/riscv/lib/sbi.c
index 77845a73ca..2b53896b8a 100644
--- a/arch/riscv/lib/sbi.c
+++ b/arch/riscv/lib/sbi.c
@@ -108,6 +108,18 @@ int sbi_probe_extension(int extid)
 	return -ENOTSUPP;
 }
 
+/**
+ * sbi_srst_reset() - invoke system reset extension
+ *
+ * @type:	type of reset
+ * @reason:	reason for reset
+ */
+void sbi_srst_reset(unsigned long type, unsigned long reason)
+{
+	sbi_ecall(SBI_EXT_SRST, SBI_EXT_SRST_RESET, type, reason,
+		  0, 0, 0, 0);
+}
+
 #ifdef CONFIG_SBI_V01
 
 /**