mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
e97590654a
The function's name is misleading as one might think it is used generally to select the boot-mode when in reality it is only used by the MMC driver to find out in what way it should try reading U-Boot Proper from a device (either using a filesystem, a raw sector/partition, or an eMMC boot partition). Rename it to spl_mmc_boot_mode() to make it more obvious what this function is about. Link: https://lists.denx.de/pipermail/u-boot/2020-April/405979.html Signed-off-by: Harald Seiler <hws@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
33 lines
1 KiB
C
33 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016 Socionext Inc.
|
|
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <mmc.h>
|
|
#include <spl.h>
|
|
|
|
u32 spl_mmc_boot_mode(const u32 boot_device)
|
|
{
|
|
struct mmc *mmc;
|
|
|
|
/*
|
|
* work around a bug in the Boot ROM of LD4, Pro4, and sLD8:
|
|
*
|
|
* The boot ROM in these SoCs breaks the PARTITION_CONFIG [179] of
|
|
* Extended CSD register; when switching to the Boot Partition 1, the
|
|
* Boot ROM should issue the SWITCH command (CMD6) with Set Bits for
|
|
* the Access Bits, but in fact it uses Write Byte for the Access Bits.
|
|
* As a result, the BOOT_PARTITION_ENABLE field of the PARTITION_CONFIG
|
|
* is lost. This bug was fixed for PH1-Pro5 and later SoCs.
|
|
*
|
|
* Fixup mmc->part_config here because it is used to determine the
|
|
* partition which the U-Boot image is read from.
|
|
*/
|
|
mmc = find_mmc_device(0);
|
|
mmc->part_config &= ~EXT_CSD_BOOT_PART_NUM(PART_ACCESS_MASK);
|
|
mmc->part_config |= EXT_CSD_BOOT_PARTITION_ENABLE;
|
|
|
|
return MMCSD_MODE_EMMCBOOT;
|
|
}
|