summaryrefslogtreecommitdiffstats
path: root/board/exmeritus/hww1u1a/hww1u1a.c
blob: 97b84b322451486cec051fec8c8007ce2026c952 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
/*
 * Copyright 2009-2011 eXMeritus, A Boeing Company
 * Copyright 2007-2009 Freescale Semiconductor, Inc.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <pci.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/cache.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_pci.h>
#include <fsl_ddr_sdram.h>
#include <asm/io.h>
#include <miiphy.h>
#include <libfdt.h>
#include <linux/ctype.h>
#include <fdt_support.h>
#include <fsl_mdio.h>
#include <tsec.h>
#include <asm/fsl_law.h>
#include <netdev.h>
#include <malloc.h>
#include <i2c.h>
#include <pca953x.h>

#include "gpios.h"

DECLARE_GLOBAL_DATA_PTR;

int checkboard(void)
{
	unsigned int gpio_high = 0;
	unsigned int gpio_low  = 0;
	unsigned int gpio_in   = 0;
	unsigned int i;
	struct ccsr_ddr __iomem *ddr;

	puts("Board: HWW-1U-1A ");

	/*
	 * First just figure out which CPU we're on, then use that to
	 * configure the lists of other GPIOs to be programmed.
	 */
	mpc85xx_gpio_set_in(GPIO_CPU_ID);
	if (hww1u1a_is_cpu_a()) {
		puts("CPU A\n");

		/* We want to turn on some LEDs */
		gpio_high |= GPIO_CPUA_CPU_READY;
		gpio_low  |= GPIO_CPUA_DEBUG_LED1;
		gpio_low  |= GPIO_CPUA_DEBUG_LED2;

		/* Disable the unused transmitters */
		gpio_low  |= GPIO_CPUA_TDIS1A;
		gpio_high |= GPIO_CPUA_TDIS1B;
		gpio_low  |= GPIO_CPUA_TDIS2A;
		gpio_high |= GPIO_CPUA_TDIS2B;
	} else {
		puts("CPU B\n");

		/* We want to turn on some LEDs */
		gpio_high |= GPIO_CPUB_CPU_READY;
		gpio_low  |= GPIO_CPUB_DEBUG_LED1;
		gpio_low  |= GPIO_CPUB_DEBUG_LED2;

		/* Enable the appropriate receivers */
		gpio_high |= GPIO_CPUB_RMUX_SEL0A;
		gpio_high |= GPIO_CPUB_RMUX_SEL0B;
		gpio_low  |= GPIO_CPUB_RMUX_SEL1A;
		gpio_low  |= GPIO_CPUB_RMUX_SEL1B;
	}

	/* These GPIOs are common */
	gpio_in   |= IRQ_I2CINT | IRQ_FANINT | IRQ_DIMM_EVENT;
	gpio_low  |= GPIO_RS422_RE;
	gpio_high |= GPIO_RS422_DE;

	/* Ok, now go ahead and program all of those in one go */
	mpc85xx_gpio_set(gpio_high|gpio_low|gpio_in,
			 gpio_high|gpio_low,
			 gpio_high);

	/*
	 * If things have been taken out of reset early (for example, by one
	 * of the BDI3000 debuggers), then we need to put them back in reset
	 * and delay a while before we continue.
	 */
	if (mpc85xx_gpio_get(GPIO_RESETS)) {
		ddr = (struct ccsr_ddr __iomem *)CONFIG_SYS_FSL_DDR_ADDR;

		puts("Debugger detected... extra device reset enabled!\n");

		/* Put stuff into reset and disable the DDR controller */
		mpc85xx_gpio_set_low(GPIO_RESETS);
		out_be32(&ddr->sdram_cfg, 0x00000000);

		puts("    Waiting 1 sec for reset...");
		for (i = 0; i < 10; i++) {
			udelay(100000);
			puts(".");
		}
		puts("\n");
	}

	/* Now bring everything back out of reset again */
	mpc85xx_gpio_set_high(GPIO_RESETS);
	return 0;
}

/*
 * This little shell function just returns whether or not it's CPU A.
 * It can be used to select the right device-tree when booting, etc.
 */
int do_hww1u1a_test_cpu_a(cmd_tbl_t *cmdtp, int flag,
		int argc, char * const argv[])
{
	if (argc > 1)
		cmd_usage(cmdtp);

	if (hww1u1a_is_cpu_a())
		return 0;
	else
		return 1;
}
U_BOOT_CMD(
	test_cpu_a, 1, 0, do_hww1u1a_test_cpu_a,
	"Test if this is CPU A (versus B) on the eXMeritus HWW-1U-1A board",
	""
);

/* Create a prompt-like string: "uboot@HOSTNAME% " */
#define PROMPT_PREFIX "uboot@exm"
#define PROMPT_SUFFIX "% "

/* This function returns a PS1 prompt based on the serial number */
static char *hww1u1a_prompt;
const char *hww1u1a_get_ps1(void)
{
	unsigned long len, i, j;
	const char *serialnr;

	/* If our prompt was already set, just use that */
	if (hww1u1a_prompt)
		return hww1u1a_prompt;

	/* Use our serial number if present, otherwise a default */
	serialnr = getenv("serial#");
	if (!serialnr || !serialnr[0])
		serialnr = "999999-X";

	/*
	 * We will turn the serial number into a hostname by:
	 *   (A) Delete all non-alphanumerics.
	 *   (B) Lowercase all letters.
	 *   (C) Prefix "exm".
	 *   (D) Suffix "a" for CPU A and "b" for CPU B.
	 */
	for (i = 0, len = 0; serialnr[i]; i++) {
		if (isalnum(serialnr[i]))
			len++;
	}

	len += sizeof(PROMPT_PREFIX PROMPT_SUFFIX) + 1; /* Includes NUL */
	hww1u1a_prompt = malloc(len);
	if (!hww1u1a_prompt)
		return PROMPT_PREFIX "UNKNOWN(ENOMEM)" PROMPT_SUFFIX;

	/* Now actually fill it in */
	i = 0;

	/* Handle the prefix */
	for (j = 0; j < sizeof(PROMPT_PREFIX) - 1; j++)
		hww1u1a_prompt[i++] = PROMPT_PREFIX[j];

	/* Now the serial# part of the hostname */
	for (j = 0; serialnr[j]; j++)
		if (isalnum(serialnr[j]))
			hww1u1a_prompt[i++] = tolower(serialnr[j]);

	/* Now the CPU id ("a" or "b") */
	hww1u1a_prompt[i++] = hww1u1a_is_cpu_a() ? 'a' : 'b';

	/* Finally the suffix */
	for (j = 0; j < sizeof(PROMPT_SUFFIX); j++)
		hww1u1a_prompt[i++] = PROMPT_SUFFIX[j];

	/* This should all have added up, but just in case */
	hww1u1a_prompt[len - 1] = '\0';

	/* Now we're done */
	return hww1u1a_prompt;
}

void pci_init_board(void)
{
	fsl_pcie_init_board(0);
}

int board_early_init_r(void)
{
	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
	const u8 flash_esel = find_tlb_idx((void *)flashbase, 1);

	/*
	 * Remap bootflash region to caching-inhibited
	 * so that flash can be erased properly.
	 */

	/* Flush d-cache and invalidate i-cache of any FLASH data */
	flush_dcache();
	invalidate_icache();

	/* invalidate existing TLB entry for FLASH */
	disable_tlb(flash_esel);

	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
			0, flash_esel, BOOKE_PAGESZ_256M, 1);

	return 0;
}

int board_eth_init(bd_t *bis)
{
	struct tsec_info_struct tsec_info[4];
	struct fsl_pq_mdio_info mdio_info;

	SET_STD_TSEC_INFO(tsec_info[0], 1);
	SET_STD_TSEC_INFO(tsec_info[1], 2);
	SET_STD_TSEC_INFO(tsec_info[2], 3);

	if (hww1u1a_is_cpu_a())
		tsec_info[2].phyaddr = TSEC3_PHY_ADDR_CPUA;
	else
		tsec_info[2].phyaddr = TSEC3_PHY_ADDR_CPUB;

	mdio_info.regs = (struct tsec_mii_mng *)CONFIG_SYS_MDIO_BASE_ADDR;
	mdio_info.name = DEFAULT_MII_NAME;
	fsl_pq_mdio_init(bis, &mdio_info);

	tsec_eth_init(bis, tsec_info, 3);
	return pci_eth_init(bis);
}

void ft_board_setup(void *blob, bd_t *bd)
{
	phys_addr_t base;
	phys_size_t size;

	ft_cpu_setup(blob, bd);

	base = getenv_bootm_low();
	size = getenv_bootm_size();

	fdt_fixup_memory(blob, (u64)base, (u64)size);

	FT_FSL_PCI_SETUP;
}
OpenPOWER on IntegriCloud