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Reinhard Meyerd55c5c32010-10-30 23:09:58 +00001/*
2 * (C) Copyright 2007-2008
Stelian Popc9e798d2011-11-01 00:00:39 +01003 * Stelian Pop <stelian@popies.net>
Reinhard Meyerd55c5c32010-10-30 23:09:58 +00004 * Lead Tech Design <www.leadtechdesign.com>
5 *
6 * (C) Copyright 2010
7 * Reinhard Meyer, EMK Elektronik, reinhard.meyer@emk-elektronik.de
8 *
9 * See file CREDITS for list of people who contributed to this
10 * project.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * MA 02111-1307 USA
26 */
27
28#include <common.h>
29#include <net.h>
30#include <netdev.h>
31#include <mmc.h>
Andreas Bießmann77c3d842012-03-13 05:01:51 +000032#include <atmel_mci.h>
Reinhard Meyerd55c5c32010-10-30 23:09:58 +000033#include <i2c.h>
34#include <spi.h>
Reinhard Meyer9b372b22011-06-06 00:16:42 +000035#include <asm/io.h>
36#include <asm/arch/hardware.h>
Reinhard Meyerd55c5c32010-10-30 23:09:58 +000037#include <asm/arch/at91sam9260_matrix.h>
38#include <asm/arch/at91sam9_smc.h>
39#include <asm/arch/at91_common.h>
40#include <asm/arch/at91_pmc.h>
41#include <asm/arch/at91_rstc.h>
42#include <asm/arch/at91_shdwn.h>
43#include <asm/arch/gpio.h>
Reinhard Meyerd55c5c32010-10-30 23:09:58 +000044
45DECLARE_GLOBAL_DATA_PTR;
46
47#ifdef CONFIG_CMD_NAND
48static void nand_hw_init(void)
49{
Reinhard Meyer9b372b22011-06-06 00:16:42 +000050 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
51 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
Reinhard Meyerd55c5c32010-10-30 23:09:58 +000052 unsigned long csa;
53
Reinhard Meyer9b372b22011-06-06 00:16:42 +000054 /* Assign CS3 to NAND/SmartMedia Interface */
55 csa = readl(&matrix->ebicsa);
56 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
57 writel(csa, &matrix->ebicsa);
Reinhard Meyerd55c5c32010-10-30 23:09:58 +000058
59 /* Configure SMC CS3 for NAND/SmartMedia */
Reinhard Meyer9b372b22011-06-06 00:16:42 +000060 writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
61 AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
62 &smc->cs[3].setup);
63 writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
64 AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
65 &smc->cs[3].pulse);
66 writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
67 &smc->cs[3].cycle);
68 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
69 AT91_SMC_MODE_EXNW_DISABLE |
70 AT91_SMC_MODE_DBW_8 |
71 AT91_SMC_MODE_TDF_CYCLE(2),
72 &smc->cs[3].mode);
Reinhard Meyerd55c5c32010-10-30 23:09:58 +000073
74 /* Configure RDY/BSY */
75 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
76
77 /* Enable NandFlash */
78 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
79}
80#endif
81
82#ifdef CONFIG_MACB
83static void macb_hw_init(void)
84{
Reinhard Meyer9b372b22011-06-06 00:16:42 +000085 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
86
Reinhard Meyerd55c5c32010-10-30 23:09:58 +000087 /* Enable EMAC clock */
Reinhard Meyer9b372b22011-06-06 00:16:42 +000088 writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
Reinhard Meyerd55c5c32010-10-30 23:09:58 +000089
90 /* Initialize EMAC=MACB hardware */
91 at91_macb_hw_init();
92}
93#endif
94
95#ifdef CONFIG_GENERIC_ATMEL_MCI
96/* this is a weak define that we are overriding */
97int board_mmc_init(bd_t *bd)
98{
Reinhard Meyer9b372b22011-06-06 00:16:42 +000099 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
100
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000101 /* Enable MCI clock */
Reinhard Meyer9b372b22011-06-06 00:16:42 +0000102 writel(1 << ATMEL_ID_MCI, &pmc->pcer);
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000103
104 /* Initialize MCI hardware */
105 at91_mci_hw_init();
106
107 /* This calls the atmel_mmc_init in gen_atmel_mci.c */
Reinhard Meyer9b372b22011-06-06 00:16:42 +0000108 return atmel_mci_init((void *)ATMEL_BASE_MCI);
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000109}
110
111/* this is a weak define that we are overriding */
Thierry Reding314284b2012-01-02 01:15:36 +0000112int board_mmc_getcd(struct mmc *mmc)
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000113{
Thierry Reding314284b2012-01-02 01:15:36 +0000114 return !at91_get_gpio_value(CONFIG_SYS_MMC_CD_PIN);
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000115}
116
117#endif
118
119int board_early_init_f(void)
120{
Reinhard Meyer9b372b22011-06-06 00:16:42 +0000121 struct at91_shdwn *shdwn = (struct at91_shdwn *)ATMEL_BASE_SHDWN;
122 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000123
124 /*
125 * make sure the board can be powered on by
126 * any transition on WKUP
127 */
128 writel(AT91_SHDW_MR_WKMODE0H2L | AT91_SHDW_MR_WKMODE0L2H,
129 &shdwn->mr);
130
131 /* Enable clocks for all PIOs */
Reinhard Meyer9b372b22011-06-06 00:16:42 +0000132 writel((1 << ATMEL_ID_PIOA) | (1 << ATMEL_ID_PIOB) |
133 (1 << ATMEL_ID_PIOC),
134 &pmc->pcer);
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000135
136 /* set SCL0 and SDA0 to open drain */
137 at91_set_pio_output(I2C0_PORT, SCL0_PIN, 1);
138 at91_set_pio_multi_drive(I2C0_PORT, SCL0_PIN, 1);
139 at91_set_pio_pullup(I2C0_PORT, SCL0_PIN, 1);
140 at91_set_pio_output(I2C0_PORT, SDA0_PIN, 1);
141 at91_set_pio_multi_drive(I2C0_PORT, SDA0_PIN, 1);
142 at91_set_pio_pullup(I2C0_PORT, SDA0_PIN, 1);
143
144 /* set SCL1 and SDA1 to open drain */
145 at91_set_pio_output(I2C1_PORT, SCL1_PIN, 1);
146 at91_set_pio_multi_drive(I2C1_PORT, SCL1_PIN, 1);
147 at91_set_pio_pullup(I2C1_PORT, SCL1_PIN, 1);
148 at91_set_pio_output(I2C1_PORT, SDA1_PIN, 1);
149 at91_set_pio_multi_drive(I2C1_PORT, SDA1_PIN, 1);
150 at91_set_pio_pullup(I2C1_PORT, SDA1_PIN, 1);
151 return 0;
152}
153
154int board_init(void)
155{
156 /* arch number of TOP9000 Board */
157 gd->bd->bi_arch_number = MACH_TYPE_TOP9000;
158 /* adress of boot parameters */
159 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
160
Reinhard Meyer9b372b22011-06-06 00:16:42 +0000161 at91_seriald_hw_init();
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000162#ifdef CONFIG_CMD_NAND
163 nand_hw_init();
164#endif
165#ifdef CONFIG_MACB
166 macb_hw_init();
167#endif
168#ifdef CONFIG_ATMEL_SPI0
169 /* (n+4) denotes to use nSPISEL(0) in GPIO mode! */
170 at91_spi0_hw_init(1 << (FRAM_CS_NUM + 4));
171#endif
172#ifdef CONFIG_ATMEL_SPI1
173 at91_spi1_hw_init(1 << (ENC_CS_NUM + 4));
174#endif
175 return 0;
176}
177
178#ifdef CONFIG_MISC_INIT_R
179int misc_init_r(void)
180{
181 /* read 'factory' part of EEPROM */
182 read_factory_r();
183 return 0;
184}
185#endif
186
187int dram_init(void)
188{
189 gd->ram_size = get_ram_size(
190 (void *)CONFIG_SYS_SDRAM_BASE,
191 CONFIG_SYS_SDRAM_SIZE);
192 return 0;
193}
194
195#ifdef CONFIG_RESET_PHY_R
196void reset_phy(void)
197{
198 /*
199 * Initialize ethernet HW addresses prior to starting Linux,
200 * needed for nfsroot.
201 * TODO: We need to investigate if that is really necessary.
202 */
203 eth_init(gd->bd);
204}
205#endif
206
207int board_eth_init(bd_t *bis)
208{
209 int rc = 0;
210 int num = 0;
211#ifdef CONFIG_MACB
212 rc = macb_eth_initialize(0,
Reinhard Meyer9b372b22011-06-06 00:16:42 +0000213 (void *)ATMEL_BASE_EMAC0,
Reinhard Meyerd55c5c32010-10-30 23:09:58 +0000214 CONFIG_SYS_PHY_ID);
215 if (!rc)
216 num++;
217#endif
218#ifdef CONFIG_ENC28J60
219 rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM,
220 ENC_SPI_CLOCK, SPI_MODE_0);
221 if (!rc)
222 num++;
223# ifdef CONFIG_ENC28J60_2
224 rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+1,
225 ENC_SPI_CLOCK, SPI_MODE_0);
226 if (!rc)
227 num++;
228# ifdef CONFIG_ENC28J60_3
229 rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+2,
230 ENC_SPI_CLOCK, SPI_MODE_0);
231 if (!rc)
232 num++;
233# endif
234# endif
235#endif
236 return num;
237}
238
239/*
240 * I2C access functions
241 *
242 * Note:
243 * We need to access Bus 0 before relocation to access the
244 * environment settings.
245 * However i2c_get_bus_num() cannot be called before
246 * relocation.
247 */
248#ifdef CONFIG_SOFT_I2C
249void iic_init(void)
250{
251 /* ports are now initialized in board_early_init_f() */
252}
253
254int iic_read(void)
255{
256 switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
257 case 0:
258 return at91_get_pio_value(I2C0_PORT, SDA0_PIN);
259 case 1:
260 return at91_get_pio_value(I2C1_PORT, SDA1_PIN);
261 }
262 return 1;
263}
264
265void iic_sda(int bit)
266{
267 switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
268 case 0:
269 at91_set_pio_value(I2C0_PORT, SDA0_PIN, bit);
270 break;
271 case 1:
272 at91_set_pio_value(I2C1_PORT, SDA1_PIN, bit);
273 break;
274 }
275}
276
277void iic_scl(int bit)
278{
279 switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
280 case 0:
281 at91_set_pio_value(I2C0_PORT, SCL0_PIN, bit);
282 break;
283 case 1:
284 at91_set_pio_value(I2C1_PORT, SCL1_PIN, bit);
285 break;
286 }
287}
288
289#endif