Revert "g: remove eraseflashinfo"

This reverts commit 585534b0b7c94c0281eb7bf6e19eb47293f502f0.

BUG=b:187438971
TEST=make buildall -j

Change-Id: I7412a0188238da5b037da4220d206e1851bfed70
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2878870

1 files changed, 61 insertions, 0 deletions

diff --git a/chip/g/flash.c b/chip/g/flash.c
index f9ce5d580e..ab00745be9 100644
--- a/chip/g/flash.c
+++ b/chip/g/flash.c
@@ -467,3 +467,64 @@ void flash_close_ro_window(void)
 {
 	GWRITE_FIELD(GLOBALSEC, FLASH_REGION6_CTRL, WR_EN, 0);
 }
+
+#ifdef CR50_DEV
+
+static int command_erase_flash_info(int argc, char **argv)
+{
+	uint32_t *preserved_manufacture_state;
+	const size_t manuf_word_count = FLASH_INFO_MANUFACTURE_STATE_SIZE /
+		sizeof(uint32_t);
+	int i;
+	int rv = EC_ERROR_BUSY;
+
+	if (shared_mem_acquire(FLASH_INFO_MANUFACTURE_STATE_SIZE,
+			       (char **)&preserved_manufacture_state) !=
+	    EC_SUCCESS) {
+		ccprintf("Failed to allocate memory for manufacture state!\n");
+		return rv;
+	}
+
+	/* Read the entire info1. */
+	p = (uint32_t *)info1;
+	for (i = 0; i < (sizeof(*info1) / sizeof(*p)); i++) {
+		if (flash_physical_info_read_word(i * sizeof(*p), p + i) !=
+		    EC_SUCCESS) {
+			ccprintf("Failed to read word %d!\n", i);
+			goto exit;
+		}
+	}
+
+	mutex_lock(&flash_mtx);
+
+	flash_info_write_enable();
+
+	rv = do_flash_op(OP_ERASE_BLOCK, 1, 0, 512);
+
+	mutex_unlock(&flash_mtx);
+
+	if (rv != EC_SUCCESS) {
+		ccprintf("Failed to erase info space!\n");
+		goto exit;
+	}
+
+	if (flash_info_physical_write
+	    (FLASH_INFO_MANUFACTURE_STATE_OFFSET,
+	     FLASH_INFO_MANUFACTURE_STATE_SIZE,
+	     (char *)preserved_manufacture_state) != EC_SUCCESS) {
+		ccprintf("Failed to restore manufacture state!\n");
+		goto exit;
+	}
+
+	rv = EC_SUCCESS;
+ exit:
+	always_memset(preserved_manufacture_state, 0,
+		      FLASH_INFO_MANUFACTURE_STATE_SIZE);
+	shared_mem_release(preserved_manufacture_state);
+	flash_info_write_disable();
+	return rv;
+}
+DECLARE_CONSOLE_COMMAND(eraseflashinfo, command_erase_flash_info,
+			"",
+			"Erase INFO1 flash space");
+#endif