diff mbox series

[Stable-9.1.2,48/58] hw/sd/sdcard: Fix calculation of size when using eMMC boot partitions

Message ID 20241109120901.3295995-48-mjt@tls.msk.ru (mailing list archive)
State New
Headers show
Series Patch Round-up for stable 9.1.2, freeze on 2024-11-18 | expand

Commit Message

Michael Tokarev Nov. 9, 2024, 12:08 p.m. UTC 
From: Jan Luebbe <jlu@pengutronix.de>

The sd_bootpart_offset() function calculates the *runtime* offset which
changes as the guest switches between accessing the main user data area
and the boot partitions by writing to the EXT_CSD_PART_CONFIG_ACC_MASK
bits, so it shouldn't be used to calculate the main user data area size.

Instead, subtract the boot_part_size directly (twice, as there are two
identical boot partitions defined by the eMMC spec).

Suggested-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Fixes: c8cb19876d3e ("hw/sd/sdcard: Support boot area in emmc image")
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
(cherry picked from commit c078298301a8c72fe12da85d94372689196628bc)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff mbox series

Patch

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index e96181385f..a639ff674c 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -834,7 +834,9 @@  static void sd_reset(DeviceState *dev)
         sect = 0;
     }
     size = sect << HWBLOCK_SHIFT;
-    size -= sd_bootpart_offset(sd);
+    if (sd_is_emmc(sd)) {
+        size -= sd->boot_part_size * 2;
+    }
 
     sect = sd_addr_to_wpnum(size) + 1;