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-rw-r--r--MAINTAINERS1
-rw-r--r--arch/riscv/cpu/ax25/cpu.c42
-rw-r--r--arch/riscv/cpu/cpu.c13
-rw-r--r--arch/riscv/include/asm/sbi.h40
-rw-r--r--arch/riscv/lib/fdt_fixup.c5
-rw-r--r--arch/riscv/lib/sbi.c12
-rw-r--r--cmd/riscv/sbi.c30
-rw-r--r--common/image.c2
-rw-r--r--configs/qemu-riscv32_smode_defconfig1
-rw-r--r--configs/qemu-riscv32_spl_defconfig1
-rw-r--r--configs/qemu-riscv64_smode_defconfig1
-rw-r--r--configs/qemu-riscv64_spl_defconfig1
-rw-r--r--drivers/clk/clk_kendryte.c134
-rw-r--r--drivers/serial/Kconfig10
-rw-r--r--drivers/serial/Makefile1
-rw-r--r--drivers/serial/serial_sbi.c16
-rw-r--r--drivers/sysreset/Kconfig12
-rw-r--r--drivers/sysreset/Makefile1
-rw-r--r--drivers/sysreset/sysreset_sbi.c51
-rw-r--r--test/dm/k210_pll.c36
20 files changed, 313 insertions, 97 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 31b49c0a95..71f468c00a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1026,6 +1026,7 @@ T: git https://source.denx.de/u-boot/custodians/u-boot-riscv.git
F: arch/riscv/
F: cmd/riscv/
F: doc/usage/sbi.rst
+F: drivers/sysreset/sysreset_sbi.c
F: drivers/timer/andes_plmt_timer.c
F: drivers/timer/sifive_clint_timer.c
F: tools/prelink-riscv.c
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
/**
diff --git a/cmd/riscv/sbi.c b/cmd/riscv/sbi.c
index 90c0811e14..65a2c93290 100644
--- a/cmd/riscv/sbi.c
+++ b/cmd/riscv/sbi.c
@@ -29,21 +29,21 @@ static struct sbi_imp implementations[] = {
};
static struct sbi_ext extensions[] = {
- { 0x00000000, "sbi_set_timer" },
- { 0x00000001, "sbi_console_putchar" },
- { 0x00000002, "sbi_console_getchar" },
- { 0x00000003, "sbi_clear_ipi" },
- { 0x00000004, "sbi_send_ipi" },
- { 0x00000005, "sbi_remote_fence_i" },
- { 0x00000006, "sbi_remote_sfence_vma" },
- { 0x00000007, "sbi_remote_sfence_vma_asid" },
- { 0x00000008, "sbi_shutdown" },
- { 0x00000010, "SBI Base Functionality" },
- { 0x54494D45, "Timer Extension" },
- { 0x00735049, "IPI Extension" },
- { 0x52464E43, "RFENCE Extension" },
- { 0x0048534D, "Hart State Management Extension" },
- { 0x53525354, "System Reset Extension" },
+ { SBI_EXT_0_1_SET_TIMER, "sbi_set_timer" },
+ { SBI_EXT_0_1_CONSOLE_PUTCHAR, "sbi_console_putchar" },
+ { SBI_EXT_0_1_CONSOLE_GETCHAR, "sbi_console_getchar" },
+ { SBI_EXT_0_1_CLEAR_IPI, "sbi_clear_ipi" },
+ { SBI_EXT_0_1_SEND_IPI, "sbi_send_ipi" },
+ { SBI_EXT_0_1_REMOTE_FENCE_I, "sbi_remote_fence_i" },
+ { SBI_EXT_0_1_REMOTE_SFENCE_VMA, "sbi_remote_sfence_vma" },
+ { SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID, "sbi_remote_sfence_vma_asid" },
+ { SBI_EXT_0_1_SHUTDOWN, "sbi_shutdown" },
+ { SBI_EXT_BASE, "SBI Base Functionality" },
+ { SBI_EXT_TIME, "Timer Extension" },
+ { SBI_EXT_IPI, "IPI Extension" },
+ { SBI_EXT_RFENCE, "RFENCE Extension" },
+ { SBI_EXT_HSM, "Hart State Management Extension" },
+ { SBI_EXT_SRST, "System Reset Extension" },
};
static int do_sbi(struct cmd_tbl *cmdtp, int flag, int argc,
diff --git a/common/image.c b/common/image.c
index e199d61a4c..8ac57081fd 100644
--- a/common/image.c
+++ b/common/image.c
@@ -684,7 +684,7 @@ ulong env_get_bootm_low(void)
#if defined(CONFIG_SYS_SDRAM_BASE)
return CONFIG_SYS_SDRAM_BASE;
-#elif defined(CONFIG_ARM) || defined(CONFIG_MICROBLAZE)
+#elif defined(CONFIG_ARM) || defined(CONFIG_MICROBLAZE) || defined(CONFIG_RISCV)
return gd->bd->bi_dram[0].start;
#else
return 0;
diff --git a/configs/qemu-riscv32_smode_defconfig b/configs/qemu-riscv32_smode_defconfig
index f13661e2ed..a009f62369 100644
--- a/configs/qemu-riscv32_smode_defconfig
+++ b/configs/qemu-riscv32_smode_defconfig
@@ -15,3 +15,4 @@ CONFIG_CMD_NVEDIT_EFI=y
CONFIG_OF_PRIOR_STAGE=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_DM_MTD=y
+CONFIG_SYSRESET_SBI=y
diff --git a/configs/qemu-riscv32_spl_defconfig b/configs/qemu-riscv32_spl_defconfig
index da7a4d2c80..aac6f389a7 100644
--- a/configs/qemu-riscv32_spl_defconfig
+++ b/configs/qemu-riscv32_spl_defconfig
@@ -17,3 +17,4 @@ CONFIG_CMD_SBI=y
CONFIG_OF_PRIOR_STAGE=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_DM_MTD=y
+CONFIG_SYSRESET_SBI=y
diff --git a/configs/qemu-riscv64_smode_defconfig b/configs/qemu-riscv64_smode_defconfig
index 63b205d2a7..db2f21d8db 100644
--- a/configs/qemu-riscv64_smode_defconfig
+++ b/configs/qemu-riscv64_smode_defconfig
@@ -18,3 +18,4 @@ CONFIG_CMD_NVEDIT_EFI=y
CONFIG_OF_PRIOR_STAGE=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_DM_MTD=y
+CONFIG_SYSRESET_SBI=y
diff --git a/configs/qemu-riscv64_spl_defconfig b/configs/qemu-riscv64_spl_defconfig
index 96f2e3ae5d..cf33870135 100644
--- a/configs/qemu-riscv64_spl_defconfig
+++ b/configs/qemu-riscv64_spl_defconfig
@@ -18,3 +18,4 @@ CONFIG_CMD_SBI=y
CONFIG_OF_PRIOR_STAGE=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_DM_MTD=y
+CONFIG_SYSRESET_SBI=y
diff --git a/drivers/clk/clk_kendryte.c b/drivers/clk/clk_kendryte.c
index 3148756968..97efda5b6f 100644
--- a/drivers/clk/clk_kendryte.c
+++ b/drivers/clk/clk_kendryte.c
@@ -709,6 +709,10 @@ TEST_STATIC int k210_pll_calc_config(u32 rate, u32 rate_in,
* Whether we swapped r and od while enforcing frequency limits
*/
bool swapped = false;
+ /*
+ * Whether the intermediate frequencies are out-of-spec
+ */
+ bool out_of_spec;
u64 last_od = od;
u64 last_r = r;
@@ -767,76 +771,95 @@ TEST_STATIC int k210_pll_calc_config(u32 rate, u32 rate_in,
* aren't in spec, try swapping r and od. If everything is
* in-spec, calculate the relative error.
*/
- while (true) {
+again:
+ out_of_spec = false;
+ if (r > max_r) {
+ out_of_spec = true;
+ } else {
/*
- * Whether the intermediate frequencies are out-of-spec
+ * There is no way to only divide once; we need
+ * to examine the frequency with and without the
+ * effect of od.
*/
- bool out_of_spec = false;
+ u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
- if (r > max_r) {
+ if (vco > 1750000000 || vco < 340000000)
out_of_spec = true;
- } else {
- /*
- * There is no way to only divide once; we need
- * to examine the frequency with and without the
- * effect of od.
- */
- u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
+ }
+
+ if (out_of_spec) {
+ u64 new_r, new_od;
+
+ if (!swapped) {
+ u64 tmp = r;
- if (vco > 1750000000 || vco < 340000000)
- out_of_spec = true;
+ r = od;
+ od = tmp;
+ swapped = true;
+ goto again;
}
- if (out_of_spec) {
- if (!swapped) {
- u64 tmp = r;
-
- r = od;
- od = tmp;
- swapped = true;
- continue;
- } else {
- /*
- * Try looking ahead to see if there are
- * additional factors for the same
- * product.
- */
- if (i + 1 < ARRAY_SIZE(factors)) {
- u64 new_r, new_od;
-
- i++;
- new_r = UNPACK_R(factors[i]);
- new_od = UNPACK_OD(factors[i]);
- if (r * od == new_r * new_od) {
- r = new_r;
- od = new_od;
- swapped = false;
- continue;
- }
- i--;
+ /*
+ * Try looking ahead to see if there are additional
+ * factors for the same product.
+ */
+ if (i + 1 < ARRAY_SIZE(factors)) {
+ i++;
+ new_r = UNPACK_R(factors[i]);
+ new_od = UNPACK_OD(factors[i]);
+ if (r * od == new_r * new_od) {
+ r = new_r;
+ od = new_od;
+ swapped = false;
+ goto again;
+ }
+ i--;
+ }
+
+ /*
+ * Try looking back to see if there is a worse ratio
+ * that we could try anyway
+ */
+ while (i > 0) {
+ i--;
+ new_r = UNPACK_R(factors[i]);
+ new_od = UNPACK_OD(factors[i]);
+ /*
+ * Don't loop over factors for the same product
+ * to avoid getting stuck because of the above
+ * clause
+ */
+ if (r * od != new_r * new_od) {
+ if (new_r * new_od > last_r * last_od) {
+ r = new_r;
+ od = new_od;
+ swapped = false;
+ goto again;
}
break;
}
}
- error = DIV_ROUND_CLOSEST_ULL(f * inv_ratio, r * od);
- /* The lower 16 bits are spurious */
- error = abs((error - BIT(32))) >> 16;
+ /* We ran out of things to try */
+ continue;
+ }
- if (error < best_error) {
- best->r = r;
- best->f = f;
- best->od = od;
- best_error = error;
- }
- break;
+ error = DIV_ROUND_CLOSEST_ULL(f * inv_ratio, r * od);
+ /* The lower 16 bits are spurious */
+ error = abs((error - BIT(32))) >> 16;
+
+ if (error < best_error) {
+ best->r = r;
+ best->f = f;
+ best->od = od;
+ best_error = error;
}
} while (f < 64 && i + 1 < ARRAY_SIZE(factors) && error != 0);
+ log_debug("best error %lld\n", best_error);
if (best_error == S64_MAX)
return -EINVAL;
- log_debug("best error %lld\n", best_error);
return 0;
}
@@ -849,9 +872,6 @@ static ulong k210_pll_set_rate(struct k210_clk_priv *priv, int id, ulong rate,
u32 reg;
ulong calc_rate;
- if (rate_in < 0)
- return rate_in;
-
err = k210_pll_calc_config(rate, rate_in, &config);
if (err)
return err;
@@ -895,7 +915,7 @@ static ulong k210_pll_get_rate(struct k210_clk_priv *priv, int id,
u64 r, f, od;
u32 reg = readl(priv->base + k210_plls[id].off);
- if (rate_in < 0 || (reg & K210_PLL_BYPASS))
+ if (reg & K210_PLL_BYPASS)
return rate_in;
if (!(reg & K210_PLL_PWRD))
@@ -1029,6 +1049,8 @@ static ulong do_k210_clk_get_rate(struct k210_clk_priv *priv, int id)
parent = k210_clk_get_parent(priv, id);
parent_rate = do_k210_clk_get_rate(priv, parent);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
if (k210_clks[id].flags & K210_CLKF_PLL)
return k210_pll_get_rate(priv, k210_clks[id].pll, parent_rate);
@@ -1099,6 +1121,8 @@ static ulong k210_clk_set_rate(struct clk *clk, unsigned long rate)
parent = k210_clk_get_parent(priv, clk->id);
rate_in = do_k210_clk_get_rate(priv, parent);
+ if (IS_ERR_VALUE(rate_in))
+ return rate_in;
log_debug("id=%ld rate=%lu rate_in=%lu\n", clk->id, rate, rate_in);
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 3bb5b02eab..122a39789c 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -280,6 +280,14 @@ config DEBUG_EFI_CONSOLE
U-Boot when running on top of EFI (Extensive Firmware Interface).
This is a type of BIOS used by PCs.
+config DEBUG_SBI_CONSOLE
+ bool "SBI"
+ depends on SBI_V01
+ help
+ Select this to enable a debug console which calls back to SBI to
+ output to the console. This can be useful for early debugging of
+ U-Boot when running on top of SBI (Supervisor Binary Interface).
+
config DEBUG_UART_S5P
bool "Samsung S5P"
depends on ARCH_EXYNOS || ARCH_S5PC1XX
@@ -442,6 +450,7 @@ endchoice
config DEBUG_UART_BASE
hex "Base address of UART"
depends on DEBUG_UART
+ default 0 if DEBUG_SBI_CONSOLE
default 0 if DEBUG_UART_SANDBOX
help
This is the base address of your UART for memory-mapped UARTs.
@@ -452,6 +461,7 @@ config DEBUG_UART_BASE
config DEBUG_UART_CLOCK
int "UART input clock"
depends on DEBUG_UART
+ default 0 if DEBUG_SBI_CONSOLE
default 0 if DEBUG_UART_SANDBOX
default 0 if DEBUG_MVEBU_A3700_UART
help
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 3cbea8156f..4edd2aa945 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_ATMEL_USART) += atmel_usart.o
obj-$(CONFIG_BCM6345_SERIAL) += serial_bcm6345.o
obj-$(CONFIG_COREBOOT_SERIAL) += serial_coreboot.o
obj-$(CONFIG_CORTINA_UART) += serial_cortina.o
+obj-$(CONFIG_DEBUG_SBI_CONSOLE) += serial_sbi.o
obj-$(CONFIG_EFI_APP) += serial_efi.o
obj-$(CONFIG_LPC32XX_HSUART) += lpc32xx_hsuart.o
obj-$(CONFIG_MCFUART) += serial_mcf.o
diff --git a/drivers/serial/serial_sbi.c b/drivers/serial/serial_sbi.c
new file mode 100644
index 0000000000..b9f35ed36e
--- /dev/null
+++ b/drivers/serial/serial_sbi.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <debug_uart.h>
+#include <asm/sbi.h>
+
+static inline void _debug_uart_init(void)
+{
+}
+
+static inline void _debug_uart_putc(int c)
+{
+ if (CONFIG_IS_ENABLED(RISCV_SMODE))
+ sbi_console_putchar(c);
+}
+
+DEBUG_UART_FUNCS
diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig
index ac77ffbc8b..43a948cfcd 100644
--- a/drivers/sysreset/Kconfig
+++ b/drivers/sysreset/Kconfig
@@ -85,6 +85,18 @@ config SYSRESET_PSCI
Enable PSCI SYSTEM_RESET function call. To use this, PSCI firmware
must be running on your system.
+config SYSRESET_SBI
+ bool "Enable support for SBI System Reset"
+ depends on RISCV_SMODE && SBI_V02
+ select SYSRESET_CMD_POWEROFF if CMD_POWEROFF
+ help
+ Enable system reset and poweroff via the SBI system reset extension.
+ The extension was introduced in version 0.3 of the SBI specification.
+
+ If the SBI implementation provides the extension, is board specific.
+ The RISC-V platform specification mandates the extension for rich
+ operating system platforms.
+
config SYSRESET_SOCFPGA
bool "Enable support for Intel SOCFPGA family"
depends on ARCH_SOCFPGA && (TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_ARRIA10)
diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile
index de81c399d7..8e00be0779 100644
--- a/drivers/sysreset/Makefile
+++ b/drivers/sysreset/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_SYSRESET_MPC83XX) += sysreset_mpc83xx.o
obj-$(CONFIG_SYSRESET_MICROBLAZE) += sysreset_microblaze.o
obj-$(CONFIG_SYSRESET_OCTEON) += sysreset_octeon.o
obj-$(CONFIG_SYSRESET_PSCI) += sysreset_psci.o
+obj-$(CONFIG_SYSRESET_SBI) += sysreset_sbi.o
obj-$(CONFIG_SYSRESET_SOCFPGA) += sysreset_socfpga.o
obj-$(CONFIG_SYSRESET_SOCFPGA_SOC64) += sysreset_socfpga_soc64.o
obj-$(CONFIG_SYSRESET_TI_SCI) += sysreset-ti-sci.o
diff --git a/drivers/sysreset/sysreset_sbi.c b/drivers/sysreset/sysreset_sbi.c
new file mode 100644
index 0000000000..5e8090d62b
--- /dev/null
+++ b/drivers/sysreset/sysreset_sbi.c
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021, Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <sysreset.h>
+#include <asm/sbi.h>
+
+static enum sbi_srst_reset_type reset_type_map[SYSRESET_COUNT] = {
+ [SYSRESET_WARM] = SBI_SRST_RESET_TYPE_WARM_REBOOT,
+ [SYSRESET_COLD] = SBI_SRST_RESET_TYPE_COLD_REBOOT,
+ [SYSRESET_POWER] = SBI_SRST_RESET_TYPE_COLD_REBOOT,
+ [SYSRESET_POWER_OFF] = SBI_SRST_RESET_TYPE_SHUTDOWN,
+};
+
+static int sbi_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+ enum sbi_srst_reset_type reset_type;
+
+ reset_type = reset_type_map[type];
+ sbi_srst_reset(reset_type, SBI_SRST_RESET_REASON_NONE);
+
+ return -EINPROGRESS;
+}
+
+static int sbi_sysreset_probe(struct udevice *dev)
+{
+ long have_reset;
+
+ have_reset = sbi_probe_extension(SBI_EXT_SRST);
+ if (have_reset)
+ return 0;
+
+ log_warning("SBI has no system reset extension\n");
+ return -ENOENT;
+}
+
+static struct sysreset_ops sbi_sysreset_ops = {
+ .request = sbi_sysreset_request,
+};
+
+U_BOOT_DRIVER(sbi_sysreset) = {
+ .name = "sbi-sysreset",
+ .id = UCLASS_SYSRESET,
+ .ops = &sbi_sysreset_ops,
+ .probe = sbi_sysreset_probe,
+};
diff --git a/test/dm/k210_pll.c b/test/dm/k210_pll.c
index 54764f269c..f55379f336 100644
--- a/test/dm/k210_pll.c
+++ b/test/dm/k210_pll.c
@@ -69,27 +69,25 @@ static int dm_test_k210_pll(struct unit_test_state *uts)
&theirs));
ut_asserteq(-EINVAL, k210_pll_calc_config(1500000000, 20000000,
&theirs));
+ ut_asserteq(-EINVAL, k210_pll_calc_config(1750000000, 13300000,
+ &theirs));
/* Verify we get the same output with brute-force */
- ut_assertok(dm_test_k210_pll_calc_config(390000000, 26000000, &ours));
- ut_assertok(k210_pll_calc_config(390000000, 26000000, &theirs));
- ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
-
- ut_assertok(dm_test_k210_pll_calc_config(26000000, 390000000, &ours));
- ut_assertok(k210_pll_calc_config(26000000, 390000000, &theirs));
- ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
-
- ut_assertok(dm_test_k210_pll_calc_config(400000000, 26000000, &ours));
- ut_assertok(k210_pll_calc_config(400000000, 26000000, &theirs));
- ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
-
- ut_assertok(dm_test_k210_pll_calc_config(27000000, 26000000, &ours));
- ut_assertok(k210_pll_calc_config(27000000, 26000000, &theirs));
- ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
-
- ut_assertok(dm_test_k210_pll_calc_config(26000000, 27000000, &ours));
- ut_assertok(k210_pll_calc_config(26000000, 27000000, &theirs));
- ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
+#define compare(rate, rate_in) do { \
+ ut_assertok(dm_test_k210_pll_calc_config(rate, rate_in, &ours)); \
+ ut_assertok(k210_pll_calc_config(rate, rate_in, &theirs)); \
+ ut_assertok(dm_test_k210_pll_compare(&ours, &theirs)); \
+} while (0)
+
+ compare(390000000, 26000000);
+ compare(26000000, 390000000);
+ compare(400000000, 26000000);
+ compare(27000000, 26000000);
+ compare(26000000, 27000000);
+ compare(13300000 * 64, 13300000);
+ compare(21250000, 21250000 * 70);
+ compare(21250000, 1750000000);
+ compare(1750000000, 1750000000);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-19 23:37:53 +0000