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arm: mvebu: Add DM and OF_CONTROL support to SPL
[people/ms/u-boot.git] / arch / arm / mach-mvebu / spl.c
1 /*
2 * Copyright (C) 2014-2015 Stefan Roese <sr@denx.de>
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <debug_uart.h>
10 #include <fdtdec.h>
11 #include <spl.h>
12 #include <asm/io.h>
13 #include <asm/arch/cpu.h>
14 #include <asm/arch/soc.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17
18 u32 spl_boot_device(void)
19 {
20 #if defined(CONFIG_SPL_SPI_FLASH_SUPPORT)
21 return BOOT_DEVICE_SPI;
22 #endif
23 #if defined(CONFIG_SPL_MMC_SUPPORT)
24 return BOOT_DEVICE_MMC1;
25 #endif
26 }
27
28 #ifdef CONFIG_SPL_MMC_SUPPORT
29 u32 spl_boot_mode(void)
30 {
31 return MMCSD_MODE_RAW;
32 }
33 #endif
34
35 void board_init_f(ulong dummy)
36 {
37 int ret;
38
39 #ifndef CONFIG_MVEBU_BOOTROM_UARTBOOT
40 /*
41 * Only call arch_cpu_init() when not returning to the
42 * Marvell BootROM, which is done when booting via
43 * the xmodem protocol (kwboot tool). Otherwise the
44 * internal register will get remapped and the BootROM
45 * can't continue to run correctly.
46 */
47
48 /* Linux expects the internal registers to be at 0xf1000000 */
49 arch_cpu_init();
50 #endif
51
52 /*
53 * Pin muxing needs to be done before UART output, since
54 * on A38x the UART pins need some re-muxing for output
55 * to work.
56 */
57 board_early_init_f();
58
59 /* Example code showing how to enable the debug UART on MVEBU */
60 #ifdef EARLY_UART
61 /*
62 * Debug UART can be used from here if required:
63 *
64 * debug_uart_init();
65 * printch('a');
66 * printhex8(0x1234);
67 * printascii("string");
68 */
69 #endif
70
71 ret = spl_init();
72 if (ret) {
73 debug("spl_init() failed: %d\n", ret);
74 hang();
75 }
76
77 /* Use special translation offset for SPL */
78 dm_set_translation_offset(0xd0000000 - 0xf1000000);
79
80 preloader_console_init();
81
82 timer_init();
83
84 /* First init the serdes PHY's */
85 serdes_phy_config();
86
87 /* Setup DDR */
88 ddr3_init();
89
90 #ifdef CONFIG_MVEBU_BOOTROM_UARTBOOT
91 /*
92 * Return to the BootROM to continue the Marvell xmodem
93 * UART boot protocol. As initiated by the kwboot tool.
94 *
95 * This can only be done by the BootROM and not by the
96 * U-Boot SPL infrastructure, since the beginning of the
97 * image is already read and interpreted by the BootROM.
98 * SPL has no chance to receive this information. So we
99 * need to return to the BootROM to enable this xmodem
100 * UART download.
101 */
102 return_to_bootrom();
103 #endif
104 }