1 /*
2  * Copyright (C) 2010 Freescale Semiconductor, Inc.
3  * Copyright (C) 2010 Ilya Yanok, Emcraft Systems, yanok@emcraft.com
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #include <common.h>
9 #include <hwconfig.h>
10 #include <i2c.h>
11 #include <spi.h>
12 #include <linux/libfdt.h>
13 #include <fdt_support.h>
14 #include <pci.h>
15 #include <mpc83xx.h>
16 #include <vsc7385.h>
17 #include <netdev.h>
18 #include <fsl_esdhc.h>
19 #include <asm/io.h>
20 #include <asm/fsl_serdes.h>
21 #include <asm/fsl_mpc83xx_serdes.h>
22 
23 DECLARE_GLOBAL_DATA_PTR;
24 
25 /*
26  * The following are used to control the SPI chip selects for the SPI command.
27  */
28 #ifdef CONFIG_MPC8XXX_SPI
29 
30 #define SPI_CS_MASK	0x00400000
31 
32 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
33 {
34 	return bus == 0 && cs == 0;
35 }
36 
37 void spi_cs_activate(struct spi_slave *slave)
38 {
39 	immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
40 
41 	/* active low */
42 	clrbits_be32(&immr->gpio[0].dat, SPI_CS_MASK);
43 }
44 
45 void spi_cs_deactivate(struct spi_slave *slave)
46 {
47 	immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
48 
49 	/* inactive high */
50 	setbits_be32(&immr->gpio[0].dat, SPI_CS_MASK);
51 }
52 #endif /* CONFIG_MPC8XXX_SPI */
53 
54 #ifdef CONFIG_FSL_ESDHC
55 int board_mmc_init(bd_t *bd)
56 {
57 	return fsl_esdhc_mmc_init(bd);
58 }
59 #endif
60 
61 static u8 read_board_info(void)
62 {
63 	u8 val8;
64 	i2c_set_bus_num(0);
65 
66 	if (i2c_read(CONFIG_SYS_I2C_PCF8574A_ADDR, 0, 0, &val8, 1) == 0)
67 		return val8;
68 	else
69 		return 0;
70 }
71 
72 int checkboard(void)
73 {
74 	static const char * const rev_str[] = {
75 		"1.0",
76 		"<reserved>",
77 		"<reserved>",
78 		"<reserved>",
79 		"<unknown>",
80 	};
81 	u8 info;
82 	int i;
83 
84 	info = read_board_info();
85 	i = (!info) ? 4 : info & 0x03;
86 
87 	printf("Board: Freescale MPC8308RDB Rev %s\n", rev_str[i]);
88 
89 	return 0;
90 }
91 
92 static struct pci_region pcie_regions_0[] = {
93 	{
94 		.bus_start = CONFIG_SYS_PCIE1_MEM_BASE,
95 		.phys_start = CONFIG_SYS_PCIE1_MEM_PHYS,
96 		.size = CONFIG_SYS_PCIE1_MEM_SIZE,
97 		.flags = PCI_REGION_MEM,
98 	},
99 	{
100 		.bus_start = CONFIG_SYS_PCIE1_IO_BASE,
101 		.phys_start = CONFIG_SYS_PCIE1_IO_PHYS,
102 		.size = CONFIG_SYS_PCIE1_IO_SIZE,
103 		.flags = PCI_REGION_IO,
104 	},
105 };
106 
107 void pci_init_board(void)
108 {
109 	immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
110 	sysconf83xx_t *sysconf = &immr->sysconf;
111 	law83xx_t *pcie_law = sysconf->pcielaw;
112 	struct pci_region *pcie_reg[] = { pcie_regions_0 };
113 
114 	fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_PEX,
115 					FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
116 
117 	/* Deassert the resets in the control register */
118 	out_be32(&sysconf->pecr1, 0xE0008000);
119 	udelay(2000);
120 
121 	/* Configure PCI Express Local Access Windows */
122 	out_be32(&pcie_law[0].bar, CONFIG_SYS_PCIE1_BASE & LAWBAR_BAR);
123 	out_be32(&pcie_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
124 
125 	mpc83xx_pcie_init(1, pcie_reg);
126 }
127 /*
128  * Miscellaneous late-boot configurations
129  *
130  * If a VSC7385 microcode image is present, then upload it.
131 */
132 int misc_init_r(void)
133 {
134 #ifdef CONFIG_MPC8XXX_SPI
135 	immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
136 	sysconf83xx_t *sysconf = &immr->sysconf;
137 
138 	/*
139 	 * Set proper bits in SICRH to allow SPI on header J8
140 	 *
141 	 * NOTE: this breaks the TSEC2 interface, attached to the Vitesse
142 	 * switch. The pinmux configuration does not have a fine enough
143 	 * granularity to support both simultaneously.
144 	 */
145 	clrsetbits_be32(&sysconf->sicrh, SICRH_GPIO_A_TSEC2, SICRH_GPIO_A_GPIO);
146 	puts("WARNING: SPI enabled, TSEC2 support is broken\n");
147 
148 	/* Set header J8 SPI chip select output, disabled */
149 	setbits_be32(&immr->gpio[0].dir, SPI_CS_MASK);
150 	setbits_be32(&immr->gpio[0].dat, SPI_CS_MASK);
151 #endif
152 
153 #ifdef CONFIG_VSC7385_IMAGE
154 	if (vsc7385_upload_firmware((void *) CONFIG_VSC7385_IMAGE,
155 		CONFIG_VSC7385_IMAGE_SIZE)) {
156 		puts("Failure uploading VSC7385 microcode.\n");
157 		return 1;
158 	}
159 #endif
160 
161 	return 0;
162 }
163 #if defined(CONFIG_OF_BOARD_SETUP)
164 int ft_board_setup(void *blob, bd_t *bd)
165 {
166 	ft_cpu_setup(blob, bd);
167 	fsl_fdt_fixup_dr_usb(blob, bd);
168 	fdt_fixup_esdhc(blob, bd);
169 
170 	return 0;
171 }
172 #endif
173 
174 int board_eth_init(bd_t *bis)
175 {
176 	int rv, num_if = 0;
177 
178 	/* Initialize TSECs first */
179 	rv = cpu_eth_init(bis);
180 	if (rv >= 0)
181 		num_if += rv;
182 	else
183 		printf("ERROR: failed to initialize TSECs.\n");
184 
185 	rv = pci_eth_init(bis);
186 	if (rv >= 0)
187 		num_if += rv;
188 	else
189 		printf("ERROR: failed to initialize PCI Ethernet.\n");
190 
191 	return num_if;
192 }
193