[PATCH 1/2] fastboot: fb_getvar: Add getvar_logical_blocksize for MXP mfgtool

[Angus Ainslie <angus@akkea.ca>]

uuu uses the blocksize to determine the upload size

Signed-off-by: Angus Ainslie <angus@akkea.ca>
---
 drivers/fastboot/fb_getvar.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/fastboot/fb_getvar.c b/drivers/fastboot/fb_getvar.c
index d43f2cfee6..ff5f0d3d40 100644
--- a/drivers/fastboot/fb_getvar.c
+++ b/drivers/fastboot/fb_getvar.c
@@ -31,6 +31,7 @@ static void getvar_partition_type(char *part_name, char *response);
 static void getvar_partition_size(char *part_name, char *response);
 #endif
 static void getvar_is_userspace(char *var_parameter, char *response);
+static void getvar_logical_blocksize(char *var_parameter, char *response);
 
 static const struct {
 	const char *variable;
@@ -81,6 +82,9 @@ static const struct {
 	}, {
 		.variable = "is-userspace",
 		.dispatch = getvar_is_userspace
+	}, {
+		.variable = "logical-block-size",
+		.dispatch = getvar_logical_blocksize
 	}
 };
 
@@ -140,6 +144,29 @@ static void getvar_downloadsize(char *var_parameter, char *response)
 	fastboot_response("OKAY", response, "0x%08x", fastboot_buf_size);
 }
 
+static int fb_get_block_size(void)
+{
+	int dev_no = 0;
+	struct blk_desc *dev_desc;
+
+	dev_desc = blk_get_dev("mmc", 0);
+
+	if (!dev_desc) {
+		printf("** Block device %s %d not supported\n",
+		       "mmc", 0);
+		return 0;
+	}
+	return dev_desc->blksz;
+}
+
+static void getvar_logical_blocksize(char *var_parameter, char *response)
+{
+	u32 blksz;
+
+	blksz = fb_get_block_size();
+	fastboot_response("OKAY", response, "0x%08x", blksz);
+}
+
 static void getvar_serialno(char *var_parameter, char *response)
 {
 	const char *tmp = env_get("serial#");
-- 
2.25.1