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ARM: implement relocation for ARM926
[thirdparty/u-boot.git] / board / keymile / km_arm / km_arm.c
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1/*
2 * (C) Copyright 2009
3 * Marvell Semiconductor <www.marvell.com>
4 * Prafulla Wadaskar <prafulla@marvell.com>
5 *
6 * (C) Copyright 2009
7 * Stefan Roese, DENX Software Engineering, sr@denx.de.
8 *
9 * (C) Copyright 2010
10 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
11 *
12 * See file CREDITS for list of people who contributed to this
13 * project.
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation; either version 2 of
18 * the License, or (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
28 * MA 02110-1301 USA
29 */
30
31#include <common.h>
32#include <i2c.h>
33#include <nand.h>
34#include <netdev.h>
35#include <miiphy.h>
36#include <asm/io.h>
37#include <asm/arch/kirkwood.h>
38#include <asm/arch/mpp.h>
39
40#include "../common/common.h"
41
42DECLARE_GLOBAL_DATA_PTR;
43
44static int io_dev;
45extern I2C_MUX_DEVICE *i2c_mux_ident_muxstring (uchar *buf);
46
47/* Multi-Purpose Pins Functionality configuration */
48u32 kwmpp_config[] = {
49 MPP0_NF_IO2,
50 MPP1_NF_IO3,
51 MPP2_NF_IO4,
52 MPP3_NF_IO5,
53 MPP4_NF_IO6,
54 MPP5_NF_IO7,
55 MPP6_SYSRST_OUTn,
56 MPP7_PEX_RST_OUTn,
57#if defined(CONFIG_SOFT_I2C)
58 MPP8_GPIO, /* SDA */
59 MPP9_GPIO, /* SCL */
60#endif
61#if defined(CONFIG_HARD_I2C)
62 MPP8_TW_SDA,
63 MPP9_TW_SCK,
64#endif
65 MPP10_UART0_TXD,
66 MPP11_UART0_RXD,
67 MPP12_GPO, /* Reserved */
68 MPP13_UART1_TXD,
69 MPP14_UART1_RXD,
70 MPP15_GPIO, /* Not used */
71 MPP16_GPIO, /* Not used */
72 MPP17_GPIO, /* Reserved */
73 MPP18_NF_IO0,
74 MPP19_NF_IO1,
75 MPP20_GPIO,
76 MPP21_GPIO,
77 MPP22_GPIO,
78 MPP23_GPIO,
79 MPP24_GPIO,
80 MPP25_GPIO,
81 MPP26_GPIO,
82 MPP27_GPIO,
83 MPP28_GPIO,
84 MPP29_GPIO,
85 MPP30_GPIO,
86 MPP31_GPIO,
87 MPP32_GPIO,
88 MPP33_GPIO,
89 MPP34_GPIO, /* CDL1 (input) */
90 MPP35_GPIO, /* CDL2 (input) */
91 MPP36_GPIO, /* MAIN_IRQ (input) */
92 MPP37_GPIO, /* BOARD_LED */
93 MPP38_GPIO, /* Piggy3 LED[1] */
94 MPP39_GPIO, /* Piggy3 LED[2] */
95 MPP40_GPIO, /* Piggy3 LED[3] */
96 MPP41_GPIO, /* Piggy3 LED[4] */
97 MPP42_GPIO, /* Piggy3 LED[5] */
98 MPP43_GPIO, /* Piggy3 LED[6] */
99 MPP44_GPIO, /* Piggy3 LED[7] */
100 MPP45_GPIO, /* Piggy3 LED[8] */
101 MPP46_GPIO, /* Reserved */
102 MPP47_GPIO, /* Reserved */
103 MPP48_GPIO, /* Reserved */
104 MPP49_GPIO, /* SW_INTOUTn */
105 0
106};
107
108int ethernet_present(void)
109{
110 uchar buf;
111 int ret = 0;
112
113 if (i2c_read(0x10, 2, 1, &buf, 1) != 0) {
114 printf ("%s: Error reading Boco\n", __FUNCTION__);
115 return -1;
116 }
117 if ((buf & 0x40) == 0x40) {
118 ret = 1;
119 }
120 return ret;
121}
122
123int misc_init_r(void)
124{
125 I2C_MUX_DEVICE *i2cdev;
126 char *str;
127 int mach_type;
128
129 /* add I2C Bus for I/O Expander */
130 i2cdev = i2c_mux_ident_muxstring((uchar *)"pca9554a:70:a");
131 io_dev = i2cdev->busid;
132 puts("Piggy:");
133 if (ethernet_present() == 0)
134 puts (" not");
135 puts(" present\n");
136
137 str = getenv("mach_type");
138 if (str != NULL) {
139 mach_type = simple_strtoul(str, NULL, 10);
140 printf("Overwriting MACH_TYPE with %d!!!\n", mach_type);
141 gd->bd->bi_arch_number = mach_type;
142 }
143 return 0;
144}
145
146int board_init(void)
147{
148 u32 tmp;
149
150 kirkwood_mpp_conf(kwmpp_config);
151
152 /*
153 * The FLASH_GPIO_PIN switches between using a
154 * NAND or a SPI FLASH. Set this pin on start
155 * to NAND mode.
156 */
157 tmp = readl(KW_GPIO0_BASE);
158 writel(tmp | FLASH_GPIO_PIN , KW_GPIO0_BASE);
159 tmp = readl(KW_GPIO0_BASE + 4);
160 writel(tmp & (~FLASH_GPIO_PIN) , KW_GPIO0_BASE + 4);
161 printf("KM: setting NAND mode\n");
162
163 /*
164 * arch number of board
165 */
166 gd->bd->bi_arch_number = MACH_TYPE_SUEN3;
167
168 /* address of boot parameters */
169 gd->bd->bi_boot_params = kw_sdram_bar(0) + 0x100;
170
171#if defined(CONFIG_SOFT_I2C)
172 /* init the GPIO for I2C Bitbang driver */
173 kw_gpio_set_valid(SUEN3_SDA_PIN, 1);
174 kw_gpio_set_valid(SUEN3_SCL_PIN, 1);
175 kw_gpio_direction_output(SUEN3_SDA_PIN, 0);
176 kw_gpio_direction_output(SUEN3_SCL_PIN, 0);
177#endif
178#if defined(CONFIG_SYS_EEPROM_WREN)
179 kw_gpio_set_valid(SUEN3_ENV_WP, 38);
180 kw_gpio_direction_output(SUEN3_ENV_WP, 1);
181#endif
182 return 0;
183}
184
185#if defined(CONFIG_CMD_SF)
54841ab5 186int do_spi_toggle(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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187{
188 u32 tmp;
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189 if (argc < 2)
190 return cmd_usage(cmdtp);
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191
192 if ((strcmp(argv[1], "off") == 0)) {
193 printf("SPI FLASH disabled, NAND enabled\n");
194 /* Multi-Purpose Pins Functionality configuration */
195 kwmpp_config[0] = MPP0_NF_IO2;
196 kwmpp_config[1] = MPP1_NF_IO3;
197 kwmpp_config[2] = MPP2_NF_IO4;
198 kwmpp_config[3] = MPP3_NF_IO5;
199
200 kirkwood_mpp_conf(kwmpp_config);
201 tmp = readl(KW_GPIO0_BASE);
202 writel(tmp | FLASH_GPIO_PIN , KW_GPIO0_BASE);
203 } else if ((strcmp(argv[1], "on") == 0)) {
204 printf("SPI FLASH enabled, NAND disabled\n");
205 /* Multi-Purpose Pins Functionality configuration */
206 kwmpp_config[0] = MPP0_SPI_SCn;
207 kwmpp_config[1] = MPP1_SPI_MOSI;
208 kwmpp_config[2] = MPP2_SPI_SCK;
209 kwmpp_config[3] = MPP3_SPI_MISO;
210
211 kirkwood_mpp_conf(kwmpp_config);
212 tmp = readl(KW_GPIO0_BASE);
213 writel(tmp & (~FLASH_GPIO_PIN) , KW_GPIO0_BASE);
214 } else {
47e26b1b 215 return cmd_usage(cmdtp);
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216 }
217
218 return 0;
219}
220
221U_BOOT_CMD(
222 spitoggle, 2, 0, do_spi_toggle,
223 "En-/disable SPI FLASH access",
224 "<on|off> - Enable (on) or disable (off) SPI FLASH access\n"
225 );
226#endif
227
ab86f72c 228#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
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229int dram_init(void)
230{
231 int i;
232
233 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
234 gd->bd->bi_dram[i].start = kw_sdram_bar(i);
235 gd->bd->bi_dram[i].size = get_ram_size((long *)kw_sdram_bar(i),
236 kw_sdram_bs(i));
237 }
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238
239 return 0;
240}
241#else
242int dram_init(void)
243{
244 /* dram_init must store complete ramsize in gd->ram_size */
245 /* Fix this */
246 gd->ram_size = get_ram_size((volatile void *)kw_sdram_bar(0),
247 kw_sdram_bs(0));
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248 return 0;
249}
250
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251void dram_init_banksize(void)
252{
253 int i;
254
255 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
256 gd->bd->bi_dram[i].start = kw_sdram_bar(i);
257 gd->bd->bi_dram[i].size = kw_sdram_bs(i);
258 gd->bd->bi_dram[i].size = get_ram_size((long *)kw_sdram_bar(i),
259 kw_sdram_bs(i));
260 }
261}
262#endif
263
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264/* Configure and enable MV88E1118 PHY */
265void reset_phy(void)
266{
267 char *name = "egiga0";
268
269 if (miiphy_set_current_dev(name))
270 return;
271
272 /* reset the phy */
273 miiphy_reset(name, CONFIG_PHY_BASE_ADR);
274}
275
276#if defined(CONFIG_HUSH_INIT_VAR)
277int hush_init_var (void)
278{
279 ivm_read_eeprom ();
280 return 0;
281}
282#endif
283
284#if defined(CONFIG_BOOTCOUNT_LIMIT)
285void bootcount_store (ulong a)
286{
287 volatile ulong *save_addr;
288 volatile ulong size = 0;
289 int i;
290 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
291 size += gd->bd->bi_dram[i].size;
292 }
293 save_addr = (ulong*)(size - BOOTCOUNT_ADDR);
294 writel(a, save_addr);
295 writel(BOOTCOUNT_MAGIC, &save_addr[1]);
296}
297
298ulong bootcount_load (void)
299{
300 volatile ulong *save_addr;
301 volatile ulong size = 0;
302 int i;
303 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
304 size += gd->bd->bi_dram[i].size;
305 }
306 save_addr = (ulong*)(size - BOOTCOUNT_ADDR);
307 if (readl(&save_addr[1]) != BOOTCOUNT_MAGIC)
308 return 0;
309 else
310 return readl(save_addr);
311}
312#endif
313
314#if defined(CONFIG_SOFT_I2C)
315void set_sda (int state)
316{
317 I2C_ACTIVE;
318 I2C_SDA(state);
319}
320
321void set_scl (int state)
322{
323 I2C_SCL(state);
324}
325
326int get_sda (void)
327{
328 I2C_TRISTATE;
329 return I2C_READ;
330}
331
332int get_scl (void)
333{
334 return (kw_gpio_get_value(SUEN3_SCL_PIN) ? 1 : 0);
335}
336#endif
337
338#if defined(CONFIG_SYS_EEPROM_WREN)
339int eeprom_write_enable (unsigned dev_addr, int state)
340{
341 kw_gpio_set_value(SUEN3_ENV_WP, !state);
342
343 return !kw_gpio_get_value(SUEN3_ENV_WP);
344}
345#endif