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Platforms can overwrite the weak definition of spl_mmc_boot_mode() to determine where to load U-Boot proper from. For most of them this is a trivial decision based on Kconfig variables, but it might be desirable the probe the actual device to answer this question. Pass the pointer to the mmc struct to that function, so implementations can make use of that. Compile-tested for all users changed. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Stefano Babic <sbabic@denx.de> Reviewed-by: Ley Foon Tan <ley.foon.tan@inte.com> (for SoCFPGA) Acked-by: Lokesh Vutla <lokeshvutla@ti.com> (for OMAP and K3) Reviewed-by: Simon Glass <sjg@chromium.org>
29 lines
1,004 B
C
29 lines
1,004 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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*/
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#include <mmc.h>
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#include <spl.h>
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u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
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{
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/*
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* work around a bug in the Boot ROM of LD4, Pro4, and sLD8:
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*
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* The boot ROM in these SoCs breaks the PARTITION_CONFIG [179] of
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* Extended CSD register; when switching to the Boot Partition 1, the
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* Boot ROM should issue the SWITCH command (CMD6) with Set Bits for
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* the Access Bits, but in fact it uses Write Byte for the Access Bits.
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* As a result, the BOOT_PARTITION_ENABLE field of the PARTITION_CONFIG
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* is lost. This bug was fixed for PH1-Pro5 and later SoCs.
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*
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* Fixup mmc->part_config here because it is used to determine the
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* partition which the U-Boot image is read from.
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*/
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mmc->part_config &= ~EXT_CSD_BOOT_PART_NUM(PART_ACCESS_MASK);
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mmc->part_config |= EXT_CSD_BOOT_PARTITION_ENABLE;
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return MMCSD_MODE_EMMCBOOT;
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}
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