From: "Pali Rohár" <pali@kernel.org>
To: Stefan Roese <sr@denx.de>
Cc: Martin Rowe <martin.p.rowe@gmail.com>, u-boot@lists.denx.de
Subject: [PATCH v2 u-boot-mvebu 1/4] tools: kwboot: Fix MMC partitions documentation
Date: Thu, 13 Apr 2023 22:57:47 +0200 [thread overview]
Message-ID: <20230413205750.10641-2-pali@kernel.org> (raw)
In-Reply-To: <20230413205750.10641-1-pali@kernel.org>
Boot configuration stored in EXT_CSD_PART_CONF register is completely
ignored by BootROM.
Fixes: fa03279e198d ("tools: kwboot: Add image type documentation")
Signed-off-by: Pali Rohár <pali@kernel.org>
---
tools/kwboot.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/tools/kwboot.c b/tools/kwboot.c
index 6bef4610ff8f..550d2494ff68 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -119,9 +119,12 @@
* 1024 bytes long sector sizes and also can be changed at runtime.
*
* For MMC-compatible devices, image can be stored at offset 0 or at offset
- * 2 MB. If MMC device supports HW boot partitions then image must be stored
- * on the HW partition as is configured in the EXT_CSC register (it can be
- * either boot or user data).
+ * 2 MB. If eMMC device supports HW/boot partitions then image is read from
+ * partitions in following order: Boot 1, Boot 2, RPMB, GP 1, GP 2, GP 3,
+ * GP 4, User Data, Boot 1, Boot 2. (Boot 1 and Boot 2 are really repeated).
+ * Boot configuration stored in EXT_CSD_PART_CONF eMMC register is completely
+ * ignored by the BootROM. But it sets PARTITION_ACCESS bits of that register
+ * to the selected partition from which it loaded image.
*
* Note that source address for SDIO image is stored in byte unit, like for
* any other images (except SATA). Marvell Functional Specifications for
--
2.20.1
next prev parent reply other threads:[~2023-04-13 20:59 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-13 20:57 [PATCH v2 u-boot-mvebu 0/4] arm: mvebu: Fix eMMC boot Pali Rohár
2023-04-13 20:57 ` Pali Rohár [this message]
2023-04-13 20:57 ` [PATCH v2 u-boot-mvebu 2/4] mmc: Read eMMC partition access bits before card reset Pali Rohár
2023-04-13 20:57 ` [PATCH v2 u-boot-mvebu 3/4] arm: mvebu: spl: Load proper U-Boot from correct eMMC partition Pali Rohár
2023-04-13 20:57 ` [PATCH v2 u-boot-mvebu 4/4] arm: mvebu: clearfog: Update eMMC/SD/SATA instructions Pali Rohár
2023-04-13 22:43 ` Martin Rowe
2023-04-26 23:44 ` Pali Rohár
2023-04-27 8:56 ` Stefan Roese
2023-04-29 11:08 ` Pali Rohár
2023-05-03 9:17 ` Stefan Roese
2023-05-03 9:43 ` Eugen Hristev
2023-05-03 9:57 ` Stefan Roese
2023-05-03 10:01 ` Eugen Hristev
2023-05-03 10:12 ` Stefan Roese
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