1 /*
2  * Copyright 2014 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <command.h>
9 #include <i2c.h>
10 #include <netdev.h>
11 #include <linux/compiler.h>
12 #include <asm/mmu.h>
13 #include <asm/processor.h>
14 #include <asm/immap_85xx.h>
15 #include <asm/fsl_law.h>
16 #include <asm/fsl_serdes.h>
17 #include <asm/fsl_liodn.h>
18 #include <fm_eth.h>
19 #include "t102xrdb.h"
20 #ifdef CONFIG_T1024RDB
21 #include "cpld.h"
22 #elif defined(CONFIG_T1023RDB)
23 #include <i2c.h>
24 #include <mmc.h>
25 #endif
26 #include "../common/sleep.h"
27 
28 DECLARE_GLOBAL_DATA_PTR;
29 
30 #ifdef CONFIG_T1023RDB
31 enum {
32 	GPIO1_SD_SEL    = 0x00020000, /* GPIO1_14, 0: eMMC, 1:SD/MMC */
33 	GPIO1_EMMC_SEL,
34 	GPIO3_GET_VERSION,	       /* GPIO3_4/5, 00:RevB, 01: RevC */
35 	GPIO3_BRD_VER_MASK = 0x0c000000,
36 	GPIO3_OFFSET = 0x2000,
37 	I2C_GET_BANK,
38 	I2C_SET_BANK0,
39 	I2C_SET_BANK4,
40 };
41 #endif
42 
43 int checkboard(void)
44 {
45 	struct cpu_type *cpu = gd->arch.cpu;
46 	static const char *freq[3] = {"100.00MHZ", "125.00MHz", "156.25MHZ"};
47 	ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
48 	u32 srds_s1;
49 
50 	srds_s1 = in_be32(&gur->rcwsr[4]) & FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
51 	srds_s1 >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;
52 
53 	printf("Board: %sRDB, ", cpu->name);
54 #if defined(CONFIG_T1024RDB)
55 	printf("Board rev: 0x%02x CPLD ver: 0x%02x, ",
56 	       CPLD_READ(hw_ver), CPLD_READ(sw_ver));
57 #elif defined(CONFIG_T1023RDB)
58 	printf("Rev%c, ", t1023rdb_ctrl(GPIO3_GET_VERSION) + 'B');
59 #endif
60 	printf("boot from ");
61 
62 #ifdef CONFIG_SDCARD
63 	puts("SD/MMC\n");
64 #elif CONFIG_SPIFLASH
65 	puts("SPI\n");
66 #elif defined(CONFIG_T1024RDB)
67 	u8 reg;
68 
69 	reg = CPLD_READ(flash_csr);
70 
71 	if (reg & CPLD_BOOT_SEL) {
72 		puts("NAND\n");
73 	} else {
74 		reg = ((reg & CPLD_LBMAP_MASK) >> CPLD_LBMAP_SHIFT);
75 		printf("NOR vBank%d\n", reg);
76 	}
77 #elif defined(CONFIG_T1023RDB)
78 #ifdef CONFIG_NAND
79 	puts("NAND\n");
80 #else
81 	printf("NOR vBank%d\n", t1023rdb_ctrl(I2C_GET_BANK));
82 #endif
83 #endif
84 
85 	puts("SERDES Reference Clocks:\n");
86 	if (srds_s1 == 0x95)
87 		printf("SD1_CLK1=%s, SD1_CLK2=%s\n", freq[2], freq[0]);
88 	else
89 		printf("SD1_CLK1=%s, SD1_CLK2=%s\n", freq[0], freq[1]);
90 
91 	return 0;
92 }
93 
94 #ifdef CONFIG_T1024RDB
95 static void board_mux_lane(void)
96 {
97 	ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
98 	u32 srds_prtcl_s1;
99 	u8 reg = CPLD_READ(misc_ctl_status);
100 
101 	srds_prtcl_s1 = in_be32(&gur->rcwsr[4]) &
102 				FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
103 	srds_prtcl_s1 >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;
104 
105 	if (srds_prtcl_s1 == 0x95) {
106 		/* Route Lane B to PCIE */
107 		CPLD_WRITE(misc_ctl_status, reg & ~CPLD_PCIE_SGMII_MUX);
108 	} else {
109 		/* Route Lane B to SGMII */
110 		CPLD_WRITE(misc_ctl_status, reg | CPLD_PCIE_SGMII_MUX);
111 	}
112 	CPLD_WRITE(boot_override, CPLD_OVERRIDE_MUX_EN);
113 }
114 #endif
115 
116 int board_early_init_f(void)
117 {
118 #if defined(CONFIG_DEEP_SLEEP)
119 	if (is_warm_boot())
120 		fsl_dp_disable_console();
121 #endif
122 
123 	return 0;
124 }
125 
126 int board_early_init_r(void)
127 {
128 #ifdef CONFIG_SYS_FLASH_BASE
129 	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
130 	int flash_esel = find_tlb_idx((void *)flashbase, 1);
131 	/*
132 	 * Remap Boot flash region to caching-inhibited
133 	 * so that flash can be erased properly.
134 	 */
135 
136 	/* Flush d-cache and invalidate i-cache of any FLASH data */
137 	flush_dcache();
138 	invalidate_icache();
139 	if (flash_esel == -1) {
140 		/* very unlikely unless something is messed up */
141 		puts("Error: Could not find TLB for FLASH BASE\n");
142 		flash_esel = 2;	/* give our best effort to continue */
143 	} else {
144 		/* invalidate existing TLB entry for flash + promjet */
145 		disable_tlb(flash_esel);
146 	}
147 
148 	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
149 		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
150 		0, flash_esel, BOOKE_PAGESZ_256M, 1);
151 #endif
152 
153 #ifdef CONFIG_T1024RDB
154 	board_mux_lane();
155 #endif
156 
157 	return 0;
158 }
159 
160 unsigned long get_board_sys_clk(void)
161 {
162 	return CONFIG_SYS_CLK_FREQ;
163 }
164 
165 unsigned long get_board_ddr_clk(void)
166 {
167 	return CONFIG_DDR_CLK_FREQ;
168 }
169 
170 int misc_init_r(void)
171 {
172 	return 0;
173 }
174 
175 int ft_board_setup(void *blob, bd_t *bd)
176 {
177 	phys_addr_t base;
178 	phys_size_t size;
179 
180 	ft_cpu_setup(blob, bd);
181 
182 	base = getenv_bootm_low();
183 	size = getenv_bootm_size();
184 
185 	fdt_fixup_memory(blob, (u64)base, (u64)size);
186 
187 #ifdef CONFIG_PCI
188 	pci_of_setup(blob, bd);
189 #endif
190 
191 	fdt_fixup_liodn(blob);
192 	fdt_fixup_dr_usb(blob, bd);
193 
194 #ifdef CONFIG_SYS_DPAA_FMAN
195 	fdt_fixup_fman_ethernet(blob);
196 	fdt_fixup_board_enet(blob);
197 #endif
198 
199 #ifdef CONFIG_T1023RDB
200 	if (t1023rdb_ctrl(GPIO3_GET_VERSION) > 0)
201 		fdt_enable_nor(blob);
202 #endif
203 
204 	return 0;
205 }
206 
207 #ifdef CONFIG_T1023RDB
208 /* Enable NOR flash for RevC */
209 static void fdt_enable_nor(void *blob)
210 {
211 	int nodeoff = fdt_node_offset_by_compatible(blob, 0, "cfi-flash");
212 
213 	if (nodeoff >= 0)
214 		fdt_status_okay(blob, nodeoff);
215 	else
216 		printf("WARNING unable to set status for NOR\n");
217 }
218 
219 int board_mmc_getcd(struct mmc *mmc)
220 {
221 	ccsr_gpio_t __iomem *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
222 	u32 val = in_be32(&pgpio->gpdat);
223 
224 	/* GPIO1_14, 0: eMMC, 1: SD/MMC */
225 	val &= GPIO1_SD_SEL;
226 
227 	return val ? -1 : 1;
228 }
229 
230 int board_mmc_getwp(struct mmc *mmc)
231 {
232 	ccsr_gpio_t __iomem *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
233 	u32 val = in_be32(&pgpio->gpdat);
234 
235 	val &= GPIO1_SD_SEL;
236 
237 	return val ? -1 : 0;
238 }
239 
240 static u32 t1023rdb_ctrl(u32 ctrl_type)
241 {
242 	ccsr_gpio_t __iomem *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
243 	ccsr_gur_t __iomem  *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
244 	u32 val, orig_bus = i2c_get_bus_num();
245 	u8 tmp;
246 
247 	switch (ctrl_type) {
248 	case GPIO1_SD_SEL:
249 		val = in_be32(&pgpio->gpdat);
250 		val |= GPIO1_SD_SEL;
251 		out_be32(&pgpio->gpdat, val);
252 		setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
253 		break;
254 	case GPIO1_EMMC_SEL:
255 		val = in_be32(&pgpio->gpdat);
256 		val &= ~GPIO1_SD_SEL;
257 		out_be32(&pgpio->gpdat, val);
258 		setbits_be32(&pgpio->gpdir, GPIO1_SD_SEL);
259 		break;
260 	case GPIO3_GET_VERSION:
261 		pgpio = (ccsr_gpio_t *)(CONFIG_SYS_MPC85xx_GPIO_ADDR
262 			 + GPIO3_OFFSET);
263 		val = in_be32(&pgpio->gpdat);
264 		val = ((val & GPIO3_BRD_VER_MASK) >> 26) & 0x3;
265 		if (val == 0x3) /* GPIO3_4/5 not used on RevB */
266 			val = 0;
267 		return val;
268 	case I2C_GET_BANK:
269 		i2c_set_bus_num(I2C_PCA6408_BUS_NUM);
270 		i2c_read(I2C_PCA6408_ADDR, 0, 1, &tmp, 1);
271 		tmp &= 0x7;
272 		tmp = ((tmp & 1) << 2) | (tmp & 2) | ((tmp & 4) >> 2);
273 		i2c_set_bus_num(orig_bus);
274 		return tmp;
275 	case I2C_SET_BANK0:
276 		i2c_set_bus_num(I2C_PCA6408_BUS_NUM);
277 		tmp = 0x0;
278 		i2c_write(I2C_PCA6408_ADDR, 1, 1, &tmp, 1);
279 		tmp = 0xf8;
280 		i2c_write(I2C_PCA6408_ADDR, 3, 1, &tmp, 1);
281 		/* asserting HRESET_REQ */
282 		out_be32(&gur->rstcr, 0x2);
283 		break;
284 	case I2C_SET_BANK4:
285 		i2c_set_bus_num(I2C_PCA6408_BUS_NUM);
286 		tmp = 0x1;
287 		i2c_write(I2C_PCA6408_ADDR, 1, 1, &tmp, 1);
288 		tmp = 0xf8;
289 		i2c_write(I2C_PCA6408_ADDR, 3, 1, &tmp, 1);
290 		out_be32(&gur->rstcr, 0x2);
291 		break;
292 	default:
293 		break;
294 	}
295 	return 0;
296 }
297 
298 static int switch_cmd(cmd_tbl_t *cmdtp, int flag, int argc,
299 		    char * const argv[])
300 {
301 	if (argc < 2)
302 		return CMD_RET_USAGE;
303 	if (!strcmp(argv[1], "bank0"))
304 		t1023rdb_ctrl(I2C_SET_BANK0);
305 	else if (!strcmp(argv[1], "bank4") || !strcmp(argv[1], "altbank"))
306 		t1023rdb_ctrl(I2C_SET_BANK4);
307 	else if (!strcmp(argv[1], "sd"))
308 		t1023rdb_ctrl(GPIO1_SD_SEL);
309 	else if (!strcmp(argv[1], "emmc"))
310 		t1023rdb_ctrl(GPIO1_EMMC_SEL);
311 	else
312 		return CMD_RET_USAGE;
313 	return 0;
314 }
315 
316 U_BOOT_CMD(
317 	switch, 2, 0, switch_cmd,
318 	"for bank0/bank4/sd/emmc switch control in runtime",
319 	"command (e.g. switch bank4)"
320 );
321 #endif
322