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[karo-tx-uboot.git] / board / atmel / at91sam9n12ek / at91sam9n12ek.c
1 /*
2  * (C) Copyright 2013 Atmel Corporation
3  * Josh Wu <josh.wu@atmel.com>
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24 #include <common.h>
25 #include <asm/io.h>
26 #include <asm/arch/at91sam9x5_matrix.h>
27 #include <asm/arch/at91sam9_smc.h>
28 #include <asm/arch/at91_common.h>
29 #include <asm/arch/at91_pmc.h>
30 #include <asm/arch/at91_rstc.h>
31 #include <asm/arch/at91_pio.h>
32 #include <asm/arch/clk.h>
33 #include <lcd.h>
34 #include <atmel_hlcdc.h>
35 #include <atmel_mci.h>
36
37 #ifdef CONFIG_LCD_INFO
38 #include <nand.h>
39 #include <version.h>
40 #endif
41
42 DECLARE_GLOBAL_DATA_PTR;
43
44 /* ------------------------------------------------------------------------- */
45 /*
46  * Miscelaneous platform dependent initialisations
47  */
48 #ifdef CONFIG_NAND_ATMEL
49 static void at91sam9n12ek_nand_hw_init(void)
50 {
51         struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
52         struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
53         unsigned long csa;
54
55         /* Assign CS3 to NAND/SmartMedia Interface */
56         csa = readl(&matrix->ebicsa);
57         csa |= AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA;
58         /* Configure databus */
59         csa &= ~AT91_MATRIX_NFD0_ON_D16; /* nandflash connect to D0~D15 */
60         /* Configure IO drive */
61         csa &= ~AT91_MATRIX_EBI_EBI_IOSR_NORMAL;
62
63         writel(csa, &matrix->ebicsa);
64
65         /* Configure SMC CS3 for NAND/SmartMedia */
66         writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
67                 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
68                 &smc->cs[3].setup);
69         writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(5) |
70                 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(6),
71                 &smc->cs[3].pulse);
72         writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(7),
73                 &smc->cs[3].cycle);
74         writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
75                 AT91_SMC_MODE_EXNW_DISABLE |
76 #ifdef CONFIG_SYS_NAND_DBW_16
77                 AT91_SMC_MODE_DBW_16 |
78 #else /* CONFIG_SYS_NAND_DBW_8 */
79                 AT91_SMC_MODE_DBW_8 |
80 #endif
81                 AT91_SMC_MODE_TDF_CYCLE(1),
82                 &smc->cs[3].mode);
83
84         /* Configure RDY/BSY pin */
85         at91_set_pio_input(AT91_PIO_PORTD, 5, 1);
86
87         /* Configure ENABLE pin for NandFlash */
88         at91_set_pio_output(AT91_PIO_PORTD, 4, 1);
89
90         at91_set_a_periph(AT91_PIO_PORTD, 0, 1);    /* NAND OE */
91         at91_set_a_periph(AT91_PIO_PORTD, 1, 1);    /* NAND WE */
92         at91_set_a_periph(AT91_PIO_PORTD, 2, 1);    /* ALE */
93         at91_set_a_periph(AT91_PIO_PORTD, 3, 1);    /* CLE */
94 }
95 #endif
96
97 #ifdef CONFIG_LCD
98 vidinfo_t panel_info = {
99         .vl_col = 480,
100         .vl_row = 272,
101         .vl_clk = 9000000,
102         .vl_bpix = LCD_BPP,
103         .vl_sync = 0,
104         .vl_tft = 1,
105         .vl_hsync_len = 5,
106         .vl_left_margin = 8,
107         .vl_right_margin = 43,
108         .vl_vsync_len = 10,
109         .vl_upper_margin = 4,
110         .vl_lower_margin = 12,
111         .mmio = ATMEL_BASE_LCDC,
112 };
113
114 void lcd_enable(void)
115 {
116         at91_set_pio_output(AT91_PIO_PORTC, 25, 0);     /* power up */
117 }
118
119 void lcd_disable(void)
120 {
121         at91_set_pio_output(AT91_PIO_PORTC, 25, 1);     /* power down */
122 }
123
124 #ifdef CONFIG_LCD_INFO
125 void lcd_show_board_info(void)
126 {
127         ulong dram_size, nand_size;
128         int i;
129         char temp[32];
130
131         lcd_printf("%s\n", U_BOOT_VERSION);
132         lcd_printf("ATMEL Corp\n");
133         lcd_printf("at91@atmel.com\n");
134         lcd_printf("%s CPU at %s MHz\n",
135                 ATMEL_CPU_NAME,
136                 strmhz(temp, get_cpu_clk_rate()));
137
138         dram_size = 0;
139         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
140                 dram_size += gd->bd->bi_dram[i].size;
141         nand_size = 0;
142         for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
143                 nand_size += nand_info[i].size;
144         lcd_printf("  %ld MB SDRAM, %ld MB NAND\n",
145                 dram_size >> 20,
146                 nand_size >> 20);
147 }
148 #endif /* CONFIG_LCD_INFO */
149 #endif /* CONFIG_LCD */
150
151 /* SPI chip select control */
152 #ifdef CONFIG_ATMEL_SPI
153 #include <spi.h>
154 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
155 {
156         return bus == 0 && cs < 2;
157 }
158
159 void spi_cs_activate(struct spi_slave *slave)
160 {
161         switch (slave->cs) {
162         case 0:
163                 at91_set_pio_output(AT91_PIO_PORTA, 14, 0);
164                 break;
165         case 1:
166                 at91_set_pio_output(AT91_PIO_PORTA, 7, 0);
167                 break;
168         }
169 }
170
171 void spi_cs_deactivate(struct spi_slave *slave)
172 {
173         switch (slave->cs) {
174         case 0:
175                 at91_set_pio_output(AT91_PIO_PORTA, 14, 1);
176                 break;
177         case 1:
178                 at91_set_pio_output(AT91_PIO_PORTA, 7, 1);
179                 break;
180         }
181 }
182 #endif /* CONFIG_ATMEL_SPI */
183
184 #ifdef CONFIG_GENERIC_ATMEL_MCI
185 int board_mmc_init(bd_t *bd)
186 {
187         at91_mci_hw_init();
188
189         return atmel_mci_init((void *)ATMEL_BASE_HSMCI0);
190 }
191 #endif
192
193 int board_early_init_f(void)
194 {
195         /* Enable clocks for all PIOs */
196         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
197         writel((1 << ATMEL_ID_PIOAB) | (1 << ATMEL_ID_PIOCD), &pmc->pcer);
198
199         at91_seriald_hw_init();
200         return 0;
201 }
202
203 int board_init(void)
204 {
205         /* adress of boot parameters */
206         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
207
208 #ifdef CONFIG_NAND_ATMEL
209         at91sam9n12ek_nand_hw_init();
210 #endif
211
212 #ifdef CONFIG_ATMEL_SPI
213         at91_spi0_hw_init(1 << 0);
214 #endif
215
216 #ifdef CONFIG_LCD
217         at91_lcd_hw_init();
218 #endif
219
220         return 0;
221 }
222
223 int dram_init(void)
224 {
225         gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
226                                         CONFIG_SYS_SDRAM_SIZE);
227         return 0;
228 }