[Skiboot] [PATCH v8 09/11] Create ibm, ultravisor node after uv image loaded

[Ryan Grimm]

See doc/opal-uv-abi.rst for details.

Signed-off-by: Ryan Grimm <grimm at linux.ibm.com>
---
 hw/ultravisor.c      | 28 ++++++++++++++++++++++++++++
 include/ultravisor.h |  2 ++
 2 files changed, 30 insertions(+)

diff --git a/hw/ultravisor.c b/hw/ultravisor.c
index 34c16404..9b408e40 100644
--- a/hw/ultravisor.c
+++ b/hw/ultravisor.c
@@ -75,6 +75,32 @@ int start_ultravisor(void *fdt)
 	return OPAL_SUCCESS;
 }
 
+static void add_uv(void)
+{
+	struct dt_node *uv_node, *secure_mem_node, *uv_fw_node;
+	uint64_t uv_fw_start;
+	char fw_name[64];
+
+	secure_mem_node = dt_find_compatible_node_on_chip(dt_root, NULL,
+						"ibm,secure-memory", 0);
+	if (!secure_mem_node) {
+		prlog(PR_DEBUG, "HDAT: No ibm,secure-memory found\n");
+		return;
+	}
+
+	uv_node = dt_new_check(dt_root, "ibm,ultravisor");
+	dt_add_property_string(uv_node, "compatible", "ibm,ultravisor");
+	dt_add_property_cells(uv_node, "#address-cells", 2);
+	dt_add_property_cells(uv_node, "#size-cells", 2);
+
+	uv_fw_start = dt_get_address(secure_mem_node, 0, NULL);
+
+	snprintf(fw_name, 64, "firmware@%llx", (unsigned long long)uv_fw_start);
+	uv_fw_node = dt_new_check(uv_node, fw_name);
+	dt_add_property_string(uv_fw_node, "compatible", "ibm,uv-firmware");
+	dt_add_property_u64s(uv_fw_node, "reg", uv_fw_start, UV_LOAD_MAX_SIZE);
+}
+
 static int uv_decompress_image(void)
 {
 	struct xz_decompress uv_xz;
@@ -105,6 +131,8 @@ static int uv_decompress_image(void)
 		return OPAL_INTERNAL_ERROR;
 	}
 
+	add_uv();
+
 	return OPAL_SUCCESS;
 }
 
diff --git a/include/ultravisor.h b/include/ultravisor.h
index 8048cb76..a2ae1ac5 100644
--- a/include/ultravisor.h
+++ b/include/ultravisor.h
@@ -67,4 +67,6 @@ static inline int uv_xscom_write(u64 partid, u64 pcb_addr, u64 val)
 #define MAX_COMPRESSED_UV_IMAGE_SIZE	0x40000 /* 256 Kilobytes */
 void uv_preload_image(void);
 
+#define UV_LOAD_MAX_SIZE 0x200000
+
 #endif /* __ULTRAVISOR_H */
-- 
2.18.4