mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-17 02:03:21 +09:00
fec4816387
The USB boot code is too fat and complicated to be included in SPL (at least for now). So, it was implemented as a separate project (what we call USB-loader). The expected boot sequence is as follows: Boot ROM -> USB-loader -> SPL -> U-Boot proper The USB-loader loads the SPL and U-Boot proper from a USB memory onto the locked L2 cache. Then, SPL needs to copy the U-Boot proper to DRAM, so this mode looks like a NOR boot from the view of SPL. However, we want to distinguish between (genuine) NOR boot and USB boot in some places. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/*
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* Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <spl.h>
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#include "../sbc/sbc-regs.h"
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#include "../soc-info.h"
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#include "boot-device.h"
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u32 spl_boot_device_raw(void)
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{
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if (boot_is_swapped())
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return BOOT_DEVICE_NOR;
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switch (uniphier_get_soc_type()) {
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#if defined(CONFIG_ARCH_UNIPHIER_PH1_SLD3)
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case SOC_UNIPHIER_PH1_SLD3:
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return ph1_sld3_boot_device();
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_PH1_LD4) || \
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defined(CONFIG_ARCH_UNIPHIER_PH1_PRO4) || \
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defined(CONFIG_ARCH_UNIPHIER_PH1_SLD8)
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case SOC_UNIPHIER_PH1_LD4:
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case SOC_UNIPHIER_PH1_PRO4:
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case SOC_UNIPHIER_PH1_SLD8:
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return ph1_ld4_boot_device();
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_PH1_PRO5)
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case SOC_UNIPHIER_PH1_PRO5:
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return ph1_pro5_boot_device();
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_PROXSTREAM2) || \
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defined(CONFIG_ARCH_UNIPHIER_PH1_LD6B)
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case SOC_UNIPHIER_PROXSTREAM2:
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case SOC_UNIPHIER_PH1_LD6B:
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return proxstream2_boot_device();
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#endif
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default:
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return BOOT_DEVICE_NONE;
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}
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}
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u32 spl_boot_device(void)
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{
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u32 ret;
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ret = spl_boot_device_raw();
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return ret == BOOT_DEVICE_USB ? BOOT_DEVICE_NOR : ret;
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}
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