1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * JZ4780 common routines
4  *
5  * Copyright (c) 2013 Imagination Technologies
6  * Author: Paul Burton <paul.burton@imgtec.com>
7  */
8 
9 #include <config.h>
10 #include <common.h>
11 #include <cpu_func.h>
12 #include <hang.h>
13 #include <image.h>
14 #include <init.h>
15 #include <asm/global_data.h>
16 #include <asm/io.h>
17 #include <asm/sections.h>
18 #include <mach/jz4780.h>
19 #include <mach/jz4780_dram.h>
20 #include <mmc.h>
21 #include <spl.h>
22 
23 #ifdef CONFIG_SPL_BUILD
24 /* Pointer to the global data structure for SPL */
25 DECLARE_GLOBAL_DATA_PTR;
26 gd_t gdata __attribute__ ((section(".bss")));
27 
board_init_f(ulong dummy)28 void board_init_f(ulong dummy)
29 {
30 	typedef void __noreturn (*image_entry_noargs_t)(void);
31 	struct mmc *mmc;
32 	unsigned long count;
33 	struct image_header *header;
34 	int ret;
35 
36 	/* Set global data pointer */
37 	gd = &gdata;
38 
39 	timer_init();
40 	pll_init();
41 	sdram_init();
42 	enable_caches();
43 
44 	/* Clear the BSS */
45 	memset(__bss_start, 0, (char *)&__bss_end - __bss_start);
46 
47 	gd->flags |= GD_FLG_SPL_INIT;
48 
49 	ret = mmc_initialize(NULL);
50 	if (ret)
51 		hang();
52 
53 	mmc = find_mmc_device(BOOT_DEVICE_MMC1);
54 	if (ret)
55 		hang();
56 
57 	ret = mmc_init(mmc);
58 	if (ret)
59 		hang();
60 
61 	header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
62 					 sizeof(struct image_header));
63 
64 	count = blk_dread(mmc_get_blk_desc(mmc),
65 			  CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
66 		0x800, header);
67 	if (count == 0)
68 		hang();
69 
70 	image_entry_noargs_t image_entry =
71 		(image_entry_noargs_t)CONFIG_SYS_TEXT_BASE;
72 
73 	image_entry();
74 
75 	hang();
76 }
77 #endif /* CONFIG_SPL_BUILD */
78 
board_get_usable_ram_top(ulong total_size)79 ulong board_get_usable_ram_top(ulong total_size)
80 {
81 	return CONFIG_SYS_SDRAM_BASE + (256 * 1024 * 1024);
82 }
83 
print_cpuinfo(void)84 int print_cpuinfo(void)
85 {
86 	printf("CPU:   Ingenic JZ4780\n");
87 	return 0;
88 }
89