1 files changed, 76 insertions, 0 deletions
diff --git a/core/flash-nvram.c b/core/flash-nvram.c
new file mode 100644
index 0000000..7e261b1
--- /dev/null
+++ b/core/flash-nvram.c
@@ -0,0 +1,76 @@
+/* Copyright 2013-2014 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * 	http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#include <skiboot.h>
+#include <device.h>
+#include <console.h>
+#include <opal.h>
+#include <platform.h>
+#include <libflash/libflash.h>
+
+static struct flash_chip *fl_nv_chip;
+static uint32_t fl_nv_start, fl_nv_size;
+
+static int flash_nvram_info(uint32_t *total_size)
+{
+	if (!fl_nv_chip)
+		return OPAL_HARDWARE;
+	*total_size = fl_nv_size;
+	return OPAL_SUCCESS;
+}
+
+static int flash_nvram_start_read(void *dst, uint32_t src, uint32_t len)
+{
+	int rc;
+
+	if ((src + len) > fl_nv_size) {
+		prerror("FLASH_NVRAM: read out of bound (0x%x,0x%x)\n",
+			src, len);
+		return OPAL_PARAMETER;
+	}
+	rc = flash_read(fl_nv_chip, fl_nv_start + src, dst, len);
+	if (rc)
+		return rc;
+	nvram_read_complete(true);
+	return 0;
+}
+
+static int flash_nvram_write(uint32_t dst, void *src, uint32_t len)
+{
+	/* TODO: When we have async jobs for PRD, turn this into one */
+
+	if ((dst + len) > fl_nv_size) {
+		prerror("FLASH_NVRAM: write out of bound (0x%x,0x%x)\n",
+			dst, len);
+		return OPAL_PARAMETER;
+	}
+	return flash_smart_write(fl_nv_chip, fl_nv_start + dst, src, len);
+}
+
+int flash_nvram_init(struct flash_chip *chip, uint32_t start, uint32_t size)
+{
+	fl_nv_chip = chip;
+	fl_nv_start = start;
+	fl_nv_size = size;
+
+	platform.nvram_info = flash_nvram_info;
+	platform.nvram_start_read = flash_nvram_start_read;
+	platform.nvram_write = flash_nvram_write;
+
+	return 0;
+}
+