1 /*
2  * Copyright (C) 2007 Freescale Semiconductor, Inc.
3  *
4  * Author: Scott Wood <scottwood@freescale.com>
5  *         Dave Liu <daveliu@freescale.com>
6  *
7  * SPDX-License-Identifier:	GPL-2.0+
8  */
9 
10 #include <common.h>
11 #include <hwconfig.h>
12 #include <i2c.h>
13 #include <libfdt.h>
14 #include <fdt_support.h>
15 #include <pci.h>
16 #include <mpc83xx.h>
17 #include <netdev.h>
18 #include <asm/io.h>
19 #include <ns16550.h>
20 #include <nand.h>
21 
22 DECLARE_GLOBAL_DATA_PTR;
23 
24 int board_early_init_f(void)
25 {
26 	volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
27 
28 	if (im->pmc.pmccr1 & PMCCR1_POWER_OFF)
29 		gd->flags |= GD_FLG_SILENT;
30 
31 	return 0;
32 }
33 
34 #ifndef CONFIG_NAND_SPL
35 
36 static u8 read_board_info(void)
37 {
38 	u8 val8;
39 	i2c_set_bus_num(0);
40 
41 	if (i2c_read(CONFIG_SYS_I2C_PCF8574A_ADDR, 0, 0, &val8, 1) == 0)
42 		return val8;
43 	else
44 		return 0;
45 }
46 
47 int checkboard(void)
48 {
49 	static const char * const rev_str[] = {
50 		"0.0",
51 		"0.1",
52 		"1.0",
53 		"1.1",
54 		"<unknown>",
55 	};
56 	u8 info;
57 	int i;
58 
59 	info = read_board_info();
60 	i = (!info) ? 4: info & 0x03;
61 
62 	printf("Board: Freescale MPC8315ERDB Rev %s\n", rev_str[i]);
63 
64 	return 0;
65 }
66 
67 static struct pci_region pci_regions[] = {
68 	{
69 		bus_start: CONFIG_SYS_PCI_MEM_BASE,
70 		phys_start: CONFIG_SYS_PCI_MEM_PHYS,
71 		size: CONFIG_SYS_PCI_MEM_SIZE,
72 		flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
73 	},
74 	{
75 		bus_start: CONFIG_SYS_PCI_MMIO_BASE,
76 		phys_start: CONFIG_SYS_PCI_MMIO_PHYS,
77 		size: CONFIG_SYS_PCI_MMIO_SIZE,
78 		flags: PCI_REGION_MEM
79 	},
80 	{
81 		bus_start: CONFIG_SYS_PCI_IO_BASE,
82 		phys_start: CONFIG_SYS_PCI_IO_PHYS,
83 		size: CONFIG_SYS_PCI_IO_SIZE,
84 		flags: PCI_REGION_IO
85 	}
86 };
87 
88 static struct pci_region pcie_regions_0[] = {
89 	{
90 		.bus_start = CONFIG_SYS_PCIE1_MEM_BASE,
91 		.phys_start = CONFIG_SYS_PCIE1_MEM_PHYS,
92 		.size = CONFIG_SYS_PCIE1_MEM_SIZE,
93 		.flags = PCI_REGION_MEM,
94 	},
95 	{
96 		.bus_start = CONFIG_SYS_PCIE1_IO_BASE,
97 		.phys_start = CONFIG_SYS_PCIE1_IO_PHYS,
98 		.size = CONFIG_SYS_PCIE1_IO_SIZE,
99 		.flags = PCI_REGION_IO,
100 	},
101 };
102 
103 static struct pci_region pcie_regions_1[] = {
104 	{
105 		.bus_start = CONFIG_SYS_PCIE2_MEM_BASE,
106 		.phys_start = CONFIG_SYS_PCIE2_MEM_PHYS,
107 		.size = CONFIG_SYS_PCIE2_MEM_SIZE,
108 		.flags = PCI_REGION_MEM,
109 	},
110 	{
111 		.bus_start = CONFIG_SYS_PCIE2_IO_BASE,
112 		.phys_start = CONFIG_SYS_PCIE2_IO_PHYS,
113 		.size = CONFIG_SYS_PCIE2_IO_SIZE,
114 		.flags = PCI_REGION_IO,
115 	},
116 };
117 
118 void pci_init_board(void)
119 {
120 	volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
121 	volatile sysconf83xx_t *sysconf = &immr->sysconf;
122 	volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
123 	volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
124 	volatile law83xx_t *pcie_law = sysconf->pcielaw;
125 	struct pci_region *reg[] = { pci_regions };
126 	struct pci_region *pcie_reg[] = { pcie_regions_0, pcie_regions_1, };
127 
128 	/* Enable all 3 PCI_CLK_OUTPUTs. */
129 	clk->occr |= 0xe0000000;
130 
131 	/*
132 	 * Configure PCI Local Access Windows
133 	 */
134 	pci_law[0].bar = CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR;
135 	pci_law[0].ar = LBLAWAR_EN | LBLAWAR_512MB;
136 
137 	pci_law[1].bar = CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR;
138 	pci_law[1].ar = LBLAWAR_EN | LBLAWAR_1MB;
139 
140 	mpc83xx_pci_init(1, reg);
141 
142 	/* Configure the clock for PCIE controller */
143 	clrsetbits_be32(&clk->sccr, SCCR_PCIEXP1CM | SCCR_PCIEXP2CM,
144 				    SCCR_PCIEXP1CM_1 | SCCR_PCIEXP2CM_1);
145 
146 	/* Deassert the resets in the control register */
147 	out_be32(&sysconf->pecr1, 0xE0008000);
148 	out_be32(&sysconf->pecr2, 0xE0008000);
149 	udelay(2000);
150 
151 	/* Configure PCI Express Local Access Windows */
152 	out_be32(&pcie_law[0].bar, CONFIG_SYS_PCIE1_BASE & LAWBAR_BAR);
153 	out_be32(&pcie_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
154 
155 	out_be32(&pcie_law[1].bar, CONFIG_SYS_PCIE2_BASE & LAWBAR_BAR);
156 	out_be32(&pcie_law[1].ar, LBLAWAR_EN | LBLAWAR_512MB);
157 
158 	mpc83xx_pcie_init(2, pcie_reg);
159 }
160 
161 #if defined(CONFIG_OF_BOARD_SETUP)
162 void fdt_tsec1_fixup(void *fdt, bd_t *bd)
163 {
164 	const char disabled[] = "disabled";
165 	const char *path;
166 	int ret;
167 
168 	if (hwconfig_arg_cmp("board_type", "tsec1")) {
169 		return;
170 	} else if (!hwconfig_arg_cmp("board_type", "ulpi")) {
171 		printf("NOTICE: No or unknown board_type hwconfig specified.\n"
172 		       "        Assuming board with TSEC1.\n");
173 		return;
174 	}
175 
176 	ret = fdt_path_offset(fdt, "/aliases");
177 	if (ret < 0) {
178 		printf("WARNING: can't find /aliases node\n");
179 		return;
180 	}
181 
182 	path = fdt_getprop(fdt, ret, "ethernet0", NULL);
183 	if (!path) {
184 		printf("WARNING: can't find ethernet0 alias\n");
185 		return;
186 	}
187 
188 	do_fixup_by_path(fdt, path, "status", disabled, sizeof(disabled), 1);
189 }
190 
191 int ft_board_setup(void *blob, bd_t *bd)
192 {
193 	ft_cpu_setup(blob, bd);
194 #ifdef CONFIG_PCI
195 	ft_pci_setup(blob, bd);
196 #endif
197 	fdt_fixup_dr_usb(blob, bd);
198 	fdt_tsec1_fixup(blob, bd);
199 
200 	return 0;
201 }
202 #endif
203 
204 int board_eth_init(bd_t *bis)
205 {
206 	cpu_eth_init(bis);	/* Initialize TSECs first */
207 	return pci_eth_init(bis);
208 }
209 
210 #else /* CONFIG_NAND_SPL */
211 
212 int checkboard(void)
213 {
214 	puts("Board: Freescale MPC8315ERDB\n");
215 	return 0;
216 }
217 
218 void board_init_f(ulong bootflag)
219 {
220 	board_early_init_f();
221 	NS16550_init((NS16550_t)(CONFIG_SYS_IMMR + 0x4500),
222 		     CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
223 	puts("NAND boot... ");
224 	init_timebase();
225 	initdram(0);
226 	relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC + 0x10000, (gd_t *)gd,
227 		      CONFIG_SYS_NAND_U_BOOT_RELOC);
228 }
229 
230 void board_init_r(gd_t *gd, ulong dest_addr)
231 {
232 	nand_boot();
233 }
234 
235 void putc(char c)
236 {
237 	if (gd->flags & GD_FLG_SILENT)
238 		return;
239 
240 	if (c == '\n')
241 		NS16550_putc((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), '\r');
242 
243 	NS16550_putc((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), c);
244 }
245 
246 #endif /* CONFIG_NAND_SPL */
247