cmd: provide command sbi

[platform/kernel/u-boot.git] / arch / riscv / lib / sbi.c

diff --git a/arch/riscv/lib/sbi.c b/arch/riscv/lib/sbi.c
index 4b6a9e0..77845a7 100644 (file)
--- a/arch/riscv/lib/sbi.c
+++ b/arch/riscv/lib/sbi.c
@@ -11,9 +11,6 @@
 #include <asm/encoding.h>
 #include <asm/sbi.h>
 
-/* default SBI version is 0.1 */
-unsigned long sbi_spec_version = SBI_SPEC_VERSION_DEFAULT;
-
 struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
                        unsigned long arg1, unsigned long arg2,
                        unsigned long arg3, unsigned long arg4,
@@ -40,6 +37,80 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
 }
 
 /**
+ * sbi_set_timer() - Program the timer for next timer event.
+ * @stime_value: The value after which next timer event should fire.
+ *
+ * Return: None
+ */
+void sbi_set_timer(uint64_t stime_value)
+{
+#if __riscv_xlen == 32
+       sbi_ecall(SBI_EXT_SET_TIMER, SBI_FID_SET_TIMER, stime_value,
+                 stime_value >> 32, 0, 0, 0, 0);
+#else
+       sbi_ecall(SBI_EXT_SET_TIMER, SBI_FID_SET_TIMER, stime_value,
+                 0, 0, 0, 0, 0);
+#endif
+}
+
+/**
+ * sbi_get_spec_version() - get current SBI specification version
+ *
+ * Return: version id
+ */
+long sbi_get_spec_version(void)
+{
+       struct sbiret ret;
+
+       ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_SPEC_VERSION,
+                       0, 0, 0, 0, 0, 0);
+       if (!ret.error)
+               if (ret.value)
+                       return ret.value;
+
+       return -ENOTSUPP;
+}
+
+/**
+ * sbi_get_impl_id() - get SBI implementation ID
+ *
+ * Return: implementation ID
+ */
+int sbi_get_impl_id(void)
+{
+       struct sbiret ret;
+
+       ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_IMP_ID,
+                       0, 0, 0, 0, 0, 0);
+       if (!ret.error)
+               if (ret.value)
+                       return ret.value;
+
+       return -ENOTSUPP;
+}
+
+/**
+ * sbi_probe_extension() - Check if an SBI extension ID is supported or not.
+ * @extid: The extension ID to be probed.
+ *
+ * Return: Extension specific nonzero value f yes, -ENOTSUPP otherwise.
+ */
+int sbi_probe_extension(int extid)
+{
+       struct sbiret ret;
+
+       ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_PROBE_EXT, extid,
+                       0, 0, 0, 0, 0);
+       if (!ret.error)
+               if (ret.value)
+                       return ret.value;
+
+       return -ENOTSUPP;
+}
+
+#ifdef CONFIG_SBI_V01
+
+/**
  * sbi_console_putchar() - Writes given character to the console device.
  * @ch: The data to be written to the console.
  *
@@ -85,22 +156,6 @@ void sbi_shutdown(void)
 }
 
 /**
- * sbi_set_timer() - Program the timer for next timer event.
- * @stime_value: The value after which next timer event should fire.
- *
- * Return: None
- */
-void sbi_set_timer(uint64_t stime_value)
-{
-#if __riscv_xlen == 32
-       sbi_ecall(SBI_EXT_0_1_SET_TIMER, 0, stime_value,
-                 stime_value >> 32, 0, 0, 0, 0);
-#else
-       sbi_ecall(SBI_EXT_0_1_SET_TIMER, 0, stime_value, 0, 0, 0, 0, 0);
-#endif
-}
-
-/**
  * sbi_send_ipi() - Send an IPI to any hart.
  * @hart_mask: A cpu mask containing all the target harts.
  *
@@ -108,7 +163,7 @@ void sbi_set_timer(uint64_t stime_value)
  */
 void sbi_send_ipi(const unsigned long *hart_mask)
 {
-       sbi_ecall(SBI_EXT_0_1_SEND_IPI, 0, (unsigned long)hart_mask,
+       sbi_ecall(SBI_EXT_SEND_IPI, SBI_FID_SEND_IPI, (unsigned long)hart_mask,
                  0, 0, 0, 0, 0);
 }
 
@@ -120,8 +175,8 @@ void sbi_send_ipi(const unsigned long *hart_mask)
  */
 void sbi_remote_fence_i(const unsigned long *hart_mask)
 {
-       sbi_ecall(SBI_EXT_0_1_REMOTE_FENCE_I, 0, (unsigned long)hart_mask,
-                 0, 0, 0, 0, 0);
+       sbi_ecall(SBI_EXT_REMOTE_FENCE_I, SBI_FID_REMOTE_FENCE_I,
+                 (unsigned long)hart_mask, 0, 0, 0, 0, 0);
 }
 
 /**
@@ -137,7 +192,7 @@ void sbi_remote_sfence_vma(const unsigned long *hart_mask,
                           unsigned long start,
                           unsigned long size)
 {
-       sbi_ecall(SBI_EXT_0_1_REMOTE_SFENCE_VMA, 0,
+       sbi_ecall(SBI_EXT_REMOTE_SFENCE_VMA, SBI_FID_REMOTE_SFENCE_VMA,
                  (unsigned long)hart_mask, start, size, 0, 0, 0);
 }
 
@@ -157,25 +212,9 @@ void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
                                unsigned long size,
                                unsigned long asid)
 {
-       sbi_ecall(SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID, 0,
+       sbi_ecall(SBI_EXT_REMOTE_SFENCE_VMA_ASID,
+                 SBI_FID_REMOTE_SFENCE_VMA_ASID,
                  (unsigned long)hart_mask, start, size, asid, 0, 0);
 }
 
-/**
- * sbi_probe_extension() - Check if an SBI extension ID is supported or not.
- * @extid: The extension ID to be probed.
- *
- * Return: Extension specific nonzero value f yes, -ENOTSUPP otherwise.
- */
-int sbi_probe_extension(int extid)
-{
-       struct sbiret ret;
-
-       ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_PROBE_EXT, extid,
-                       0, 0, 0, 0, 0);
-       if (!ret.error)
-               if (ret.value)
-                       return ret.value;
-
-       return -ENOTSUPP;
-}
+#endif /* CONFIG_SBI_V01 */