[Skiboot] [PATCH 2/3] external/common: Add default erase chip implmentation

[Cyril Bur]

Just blocklevel_erase() from zero to sizeof.

Signed-off-by: Cyril Bur <cyril.bur at au1.ibm.com>
---
 external/common/arch_flash_common.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/external/common/arch_flash_common.c b/external/common/arch_flash_common.c
index ba06fb2..b6c87af 100644
--- a/external/common/arch_flash_common.c
+++ b/external/common/arch_flash_common.c
@@ -13,15 +13,30 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#include <stdlib.h>
 
 #include <libflash/blocklevel.h>
 
 #include "arch_flash.h"
 
 /* Default implmentations */
+
+/*
+ * This just assumes that an erase from zero to total size is
+ * 'correct'.
+ * This is true for both powerpc and x86 and ARM has its own
+ * implmentation.
+ */
 int __attribute__((weak)) arch_flash_erase_chip(struct blocklevel_device *bl)
 {
-	return -1;
+	int rc;
+	uint64_t total_size;
+
+	rc = blocklevel_get_info(bl, NULL, &total_size, NULL);
+	if (rc)
+		return rc;
+
+	return blocklevel_erase(bl, 0, total_size);
 }
 
 int __attribute__((weak)) arch_flash_4b_mode(struct blocklevel_device *bl, int set_4b)
-- 
2.10.2