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94a45bb1 SW |
1 | /* |
2 | * Copyright 2011 Freescale Semiconductor, Inc. | |
3 | * | |
1a459660 | 4 | * SPDX-License-Identifier: GPL-2.0+ |
94a45bb1 SW |
5 | */ |
6 | ||
7 | #include <common.h> | |
8 | #include <ns16550.h> | |
9 | #include <asm/io.h> | |
10 | #include <nand.h> | |
13d1143f | 11 | #include <linux/compiler.h> |
94a45bb1 SW |
12 | #include <asm/fsl_law.h> |
13 | #include <asm/fsl_ddr_sdram.h> | |
14 | #include <asm/global_data.h> | |
15 | ||
16 | DECLARE_GLOBAL_DATA_PTR; | |
17 | ||
13d1143f | 18 | #ifndef CONFIG_SYS_INIT_L2_ADDR |
94a45bb1 SW |
19 | /* |
20 | * Fixed sdram init -- doesn't use serial presence detect. | |
21 | */ | |
13d1143f | 22 | static void sdram_init(void) |
94a45bb1 | 23 | { |
e76cd5d4 | 24 | ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC8xxx_DDR_ADDR; |
94a45bb1 SW |
25 | |
26 | __raw_writel(CONFIG_SYS_DDR_CS0_BNDS, &ddr->cs0_bnds); | |
27 | __raw_writel(CONFIG_SYS_DDR_CS0_CONFIG, &ddr->cs0_config); | |
28 | #if CONFIG_CHIP_SELECTS_PER_CTRL > 1 | |
29 | __raw_writel(CONFIG_SYS_DDR_CS1_BNDS, &ddr->cs1_bnds); | |
30 | __raw_writel(CONFIG_SYS_DDR_CS1_CONFIG, &ddr->cs1_config); | |
31 | #endif | |
32 | __raw_writel(CONFIG_SYS_DDR_TIMING_3, &ddr->timing_cfg_3); | |
33 | __raw_writel(CONFIG_SYS_DDR_TIMING_0, &ddr->timing_cfg_0); | |
34 | __raw_writel(CONFIG_SYS_DDR_TIMING_1, &ddr->timing_cfg_1); | |
35 | __raw_writel(CONFIG_SYS_DDR_TIMING_2, &ddr->timing_cfg_2); | |
36 | ||
37 | __raw_writel(CONFIG_SYS_DDR_CONTROL_2, &ddr->sdram_cfg_2); | |
38 | __raw_writel(CONFIG_SYS_DDR_MODE_1, &ddr->sdram_mode); | |
39 | __raw_writel(CONFIG_SYS_DDR_MODE_2, &ddr->sdram_mode_2); | |
40 | ||
41 | __raw_writel(CONFIG_SYS_DDR_INTERVAL, &ddr->sdram_interval); | |
42 | __raw_writel(CONFIG_SYS_DDR_DATA_INIT, &ddr->sdram_data_init); | |
43 | __raw_writel(CONFIG_SYS_DDR_CLK_CTRL, &ddr->sdram_clk_cntl); | |
44 | ||
45 | __raw_writel(CONFIG_SYS_DDR_TIMING_4, &ddr->timing_cfg_4); | |
46 | __raw_writel(CONFIG_SYS_DDR_TIMING_5, &ddr->timing_cfg_5); | |
47 | __raw_writel(CONFIG_SYS_DDR_ZQ_CONTROL, &ddr->ddr_zq_cntl); | |
48 | __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL, &ddr->ddr_wrlvl_cntl); | |
49 | ||
50 | /* Set, but do not enable the memory */ | |
51 | __raw_writel(CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN, &ddr->sdram_cfg); | |
52 | ||
53 | asm volatile("sync;isync"); | |
54 | udelay(500); | |
55 | ||
56 | /* Let the controller go */ | |
57 | out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN); | |
58 | ||
59 | set_next_law(0, CONFIG_SYS_SDRAM_SIZE_LAW, LAW_TRGT_IF_DDR_1); | |
60 | } | |
13d1143f | 61 | #endif |
94a45bb1 SW |
62 | |
63 | void board_init_f(ulong bootflag) | |
64 | { | |
65 | u32 plat_ratio; | |
66 | ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR; | |
67 | #ifndef CONFIG_QE | |
68 | ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR); | |
545c12cf XJ |
69 | #elif defined(CONFIG_P1021RDB) |
70 | par_io_t *par_io = (par_io_t *)&(gur->qe_par_io); | |
94a45bb1 SW |
71 | #endif |
72 | ||
73 | /* initialize selected port with appropriate baud rate */ | |
74 | plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO; | |
75 | plat_ratio >>= 1; | |
76 | gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio; | |
77 | ||
78 | NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1, | |
79 | gd->bus_clk / 16 / CONFIG_BAUDRATE); | |
80 | ||
81 | puts("\nNAND boot... "); | |
82 | ||
83 | #ifndef CONFIG_QE | |
84 | /* init DDR3 reset signal */ | |
85 | __raw_writel(0x02000000, &pgpio->gpdir); | |
86 | __raw_writel(0x00200000, &pgpio->gpodr); | |
87 | __raw_writel(0x00000000, &pgpio->gpdat); | |
88 | udelay(1000); | |
89 | __raw_writel(0x00200000, &pgpio->gpdat); | |
90 | udelay(1000); | |
91 | __raw_writel(0x00000000, &pgpio->gpdir); | |
545c12cf XJ |
92 | #elif defined(CONFIG_P1021RDB) |
93 | /* init DDR3 reset signal CE_PB8 */ | |
94 | out_be32(&par_io[1].cpdir1, 0x00004000); | |
95 | out_be32(&par_io[1].cpodr, 0x00800000); | |
96 | out_be32(&par_io[1].cppar1, 0x00000000); | |
97 | /* reset DDR3 */ | |
98 | out_be32(&par_io[1].cpdat, 0x00800000); | |
99 | udelay(1000); | |
100 | out_be32(&par_io[1].cpdat, 0x00000000); | |
101 | udelay(1000); | |
102 | out_be32(&par_io[1].cpdat, 0x00800000); | |
103 | /* disable the CE_PB8 */ | |
104 | out_be32(&par_io[1].cpdir1, 0x00000000); | |
94a45bb1 SW |
105 | #endif |
106 | ||
13d1143f | 107 | #ifndef CONFIG_SYS_INIT_L2_ADDR |
94a45bb1 SW |
108 | /* Initialize the DDR3 */ |
109 | sdram_init(); | |
13d1143f | 110 | #endif |
94a45bb1 SW |
111 | |
112 | /* copy code to RAM and jump to it - this should not return */ | |
113 | /* NOTE - code has to be copied out of NAND buffer before | |
114 | * other blocks can be read. | |
115 | */ | |
116 | relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE); | |
117 | } | |
118 | ||
119 | void board_init_r(gd_t *gd, ulong dest_addr) | |
120 | { | |
121 | nand_boot(); | |
122 | } | |
123 | ||
124 | void putc(char c) | |
125 | { | |
126 | if (c == '\n') | |
127 | NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r'); | |
128 | ||
129 | NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c); | |
130 | } | |
131 | ||
132 | void puts(const char *str) | |
133 | { | |
134 | while (*str) | |
135 | putc(*str++); | |
136 | } |