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ARM: uniphier: add eMMC boot support
[people/ms/u-boot.git] / arch / arm / mach-uniphier / boot-mode / boot-mode.c
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1/*
2 * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
a55d9fee 8#include <mmc.h>
323d1f9d 9#include <spl.h>
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10
11#include "../sbc/sbc-regs.h"
12#include "../soc-info.h"
13#include "boot-device.h"
323d1f9d 14
fec48163 15u32 spl_boot_device_raw(void)
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16{
17 if (boot_is_swapped())
18 return BOOT_DEVICE_NOR;
19
20 switch (uniphier_get_soc_type()) {
21#if defined(CONFIG_ARCH_UNIPHIER_PH1_SLD3)
22 case SOC_UNIPHIER_PH1_SLD3:
23 return ph1_sld3_boot_device();
24#endif
25#if defined(CONFIG_ARCH_UNIPHIER_PH1_LD4) || \
26 defined(CONFIG_ARCH_UNIPHIER_PH1_PRO4) || \
27 defined(CONFIG_ARCH_UNIPHIER_PH1_SLD8)
28 case SOC_UNIPHIER_PH1_LD4:
29 case SOC_UNIPHIER_PH1_PRO4:
30 case SOC_UNIPHIER_PH1_SLD8:
31 return ph1_ld4_boot_device();
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32#endif
33#if defined(CONFIG_ARCH_UNIPHIER_PH1_PRO5)
34 case SOC_UNIPHIER_PH1_PRO5:
35 return ph1_pro5_boot_device();
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36#endif
37#if defined(CONFIG_ARCH_UNIPHIER_PROXSTREAM2) || \
38 defined(CONFIG_ARCH_UNIPHIER_PH1_LD6B)
39 case SOC_UNIPHIER_PROXSTREAM2:
40 case SOC_UNIPHIER_PH1_LD6B:
41 return proxstream2_boot_device();
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42#endif
43 default:
44 return BOOT_DEVICE_NONE;
45 }
46}
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47
48u32 spl_boot_device(void)
49{
50 u32 ret;
51
52 ret = spl_boot_device_raw();
53
54 return ret == BOOT_DEVICE_USB ? BOOT_DEVICE_NOR : ret;
55}
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56
57u32 spl_boot_mode(void)
58{
59 struct mmc *mmc;
60
61 /*
62 * work around a bug in the Boot ROM of PH1-sLD3, LD4, Pro4, and sLD8:
63 *
64 * The boot ROM in these SoCs breaks the PARTITION_CONFIG [179] of
65 * Extended CSD register; when switching to the Boot Partition 1, the
66 * Boot ROM should issue the SWITCH command (CMD6) with Set Bits for
67 * the Access Bits, but in fact it uses Write Byte for the Access Bits.
68 * As a result, the BOOT_PARTITION_ENABLE field of the PARTITION_CONFIG
69 * is lost. This bug was fixed for PH1-Pro5 and later SoCs.
70 *
71 * Fixup mmc->part_config here because it is used to determine the
72 * partition which the U-Boot image is read from.
73 */
74 mmc = find_mmc_device(0);
75 mmc->part_config &= ~EXT_CSD_BOOT_PART_NUM(PART_ACCESS_MASK);
76 mmc->part_config |= EXT_CSD_BOOT_PARTITION_ENABLE;
77
78 return MMCSD_MODE_EMMCBOOT;
79}