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spl: eMMC/SD: Provide one __weak spl_boot_mode() function
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b0f80b91 1/*
a5f88877 2 * Copyright (C) 2014-2016 Stefan Roese <sr@denx.de>
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3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
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8#include <dm.h>
9#include <debug_uart.h>
10#include <fdtdec.h>
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11#include <spl.h>
12#include <asm/io.h>
13#include <asm/arch/cpu.h>
14#include <asm/arch/soc.h>
15
a5f88877 16static u32 get_boot_device(void)
b0f80b91 17{
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18 u32 val;
19 u32 boot_device;
20
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21 /*
22 * First check, if UART boot-mode is active. This can only
23 * be done, via the bootrom error register. Here the
24 * MSB marks if the UART mode is active.
25 */
26 val = readl(CONFIG_BOOTROM_ERR_REG);
27 boot_device = (val & BOOTROM_ERR_MODE_MASK) >> BOOTROM_ERR_MODE_OFFS;
28 debug("BOOTROM_REG=0x%08x boot_device=0x%x\n", val, boot_device);
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29#if defined(CONFIG_ARMADA_38X)
30 /*
31 * If the bootrom error register contains any else than zeros
32 * in the first 8 bits it's an error condition. And in that case
33 * try to boot from UART.
34 */
35 if (boot_device)
36#else
f4db6c97 37 if (boot_device == BOOTROM_ERR_MODE_UART)
e83e2b39 38#endif
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39 return BOOT_DEVICE_UART;
40
41 /*
42 * Now check the SAR register for the strapped boot-device
43 */
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44 val = readl(CONFIG_SAR_REG); /* SAR - Sample At Reset */
45 boot_device = (val & BOOT_DEV_SEL_MASK) >> BOOT_DEV_SEL_OFFS;
f4db6c97 46 debug("SAR_REG=0x%08x boot_device=0x%x\n", val, boot_device);
a5f88877 47 switch (boot_device) {
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48#if defined(CONFIG_ARMADA_38X)
49 case BOOT_FROM_NAND:
50 return BOOT_DEVICE_NAND;
51#endif
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52#ifdef CONFIG_SPL_MMC_SUPPORT
53 case BOOT_FROM_MMC:
54 case BOOT_FROM_MMC_ALT:
55 return BOOT_DEVICE_MMC1;
8ed43b96 56#endif
a5f88877 57 case BOOT_FROM_UART:
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58#ifdef BOOT_FROM_UART_ALT
59 case BOOT_FROM_UART_ALT:
60#endif
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61 return BOOT_DEVICE_UART;
62 case BOOT_FROM_SPI:
63 default:
64 return BOOT_DEVICE_SPI;
65 };
66}
67
68u32 spl_boot_device(void)
69{
70 return get_boot_device();
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71}
72
73void board_init_f(ulong dummy)
74{
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75 int ret;
76
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77 /*
78 * Pin muxing needs to be done before UART output, since
79 * on A38x the UART pins need some re-muxing for output
80 * to work.
81 */
82 board_early_init_f();
83
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84 /* Example code showing how to enable the debug UART on MVEBU */
85#ifdef EARLY_UART
86 /*
87 * Debug UART can be used from here if required:
88 *
89 * debug_uart_init();
90 * printch('a');
91 * printhex8(0x1234);
92 * printascii("string");
93 */
94#endif
95
96 ret = spl_init();
97 if (ret) {
98 debug("spl_init() failed: %d\n", ret);
99 hang();
100 }
101
102 /* Use special translation offset for SPL */
103 dm_set_translation_offset(0xd0000000 - 0xf1000000);
104
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105 preloader_console_init();
106
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107 timer_init();
108
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109 /* Armada 375 does not support SerDes and DDR3 init yet */
110#if !defined(CONFIG_ARMADA_375)
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111 /* First init the serdes PHY's */
112 serdes_phy_config();
113
114 /* Setup DDR */
115 ddr3_init();
09e89ab4 116#endif
b0f80b91 117
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118 /*
119 * Return to the BootROM to continue the Marvell xmodem
120 * UART boot protocol. As initiated by the kwboot tool.
121 *
122 * This can only be done by the BootROM and not by the
123 * U-Boot SPL infrastructure, since the beginning of the
124 * image is already read and interpreted by the BootROM.
125 * SPL has no chance to receive this information. So we
126 * need to return to the BootROM to enable this xmodem
127 * UART download.
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128 *
129 * If booting from NAND lets let the BootROM load the
130 * rest of the bootloader.
944c7a31 131 */
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132 switch (get_boot_device()) {
133 case BOOT_DEVICE_UART:
134#if defined(CONFIG_ARMADA_38X)
135 case BOOT_DEVICE_NAND:
136#endif
137 return_to_bootrom();
138 }
b0f80b91 139}