1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2012 Atmel Corporation
4 */
5
6 #include <common.h>
7 #include <init.h>
8 #include <asm/global_data.h>
9 #include <asm/io.h>
10 #include <asm/arch/at91sam9x5_matrix.h>
11 #include <asm/arch/at91sam9_smc.h>
12 #include <asm/arch/at91_common.h>
13 #include <asm/arch/at91_rstc.h>
14 #include <asm/arch/clk.h>
15 #include <asm/arch/gpio.h>
16 #include <debug_uart.h>
17 #include <asm/mach-types.h>
18
19 DECLARE_GLOBAL_DATA_PTR;
20
21 /* ------------------------------------------------------------------------- */
22 /*
23 * Miscelaneous platform dependent initialisations
24 */
25
26 void at91_prepare_cpu_var(void);
27
28 #ifdef CONFIG_CMD_NAND
at91sam9x5ek_nand_hw_init(void)29 static void at91sam9x5ek_nand_hw_init(void)
30 {
31 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
32 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
33 unsigned long csa;
34
35 /* Enable CS3 */
36 csa = readl(&matrix->ebicsa);
37 csa |= AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA;
38 /* NAND flash on D16 */
39 csa |= AT91_MATRIX_NFD0_ON_D16;
40
41 /* Configure IO drive */
42 csa &= ~AT91_MATRIX_EBI_EBI_IOSR_NORMAL;
43
44 writel(csa, &matrix->ebicsa);
45
46 /* Configure SMC CS3 for NAND/SmartMedia */
47 writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
48 AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
49 &smc->cs[3].setup);
50 writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(5) |
51 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(6),
52 &smc->cs[3].pulse);
53 writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(6),
54 &smc->cs[3].cycle);
55 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
56 AT91_SMC_MODE_EXNW_DISABLE |
57 #ifdef CONFIG_SYS_NAND_DBW_16
58 AT91_SMC_MODE_DBW_16 |
59 #else /* CONFIG_SYS_NAND_DBW_8 */
60 AT91_SMC_MODE_DBW_8 |
61 #endif
62 AT91_SMC_MODE_TDF_CYCLE(1),
63 &smc->cs[3].mode);
64
65 at91_periph_clk_enable(ATMEL_ID_PIOCD);
66
67 /* Configure RDY/BSY */
68 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
69 /* Enable NandFlash */
70 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
71
72 at91_pio3_set_a_periph(AT91_PIO_PORTD, 0, 1); /* NAND OE */
73 at91_pio3_set_a_periph(AT91_PIO_PORTD, 1, 1); /* NAND WE */
74 at91_pio3_set_a_periph(AT91_PIO_PORTD, 2, 1); /* NAND ALE */
75 at91_pio3_set_a_periph(AT91_PIO_PORTD, 3, 1); /* NAND CLE */
76 at91_pio3_set_a_periph(AT91_PIO_PORTD, 6, 1);
77 at91_pio3_set_a_periph(AT91_PIO_PORTD, 7, 1);
78 at91_pio3_set_a_periph(AT91_PIO_PORTD, 8, 1);
79 at91_pio3_set_a_periph(AT91_PIO_PORTD, 9, 1);
80 at91_pio3_set_a_periph(AT91_PIO_PORTD, 10, 1);
81 at91_pio3_set_a_periph(AT91_PIO_PORTD, 11, 1);
82 at91_pio3_set_a_periph(AT91_PIO_PORTD, 12, 1);
83 at91_pio3_set_a_periph(AT91_PIO_PORTD, 13, 1);
84 }
85 #endif
86
87 #ifdef CONFIG_BOARD_LATE_INIT
board_late_init(void)88 int board_late_init(void)
89 {
90 #ifdef CONFIG_DM_VIDEO
91 at91_video_show_board_info();
92 #endif
93 at91_prepare_cpu_var();
94 return 0;
95 }
96 #endif
97
98 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
board_debug_uart_init(void)99 void board_debug_uart_init(void)
100 {
101 at91_seriald_hw_init();
102 }
103 #endif
104
105 #ifdef CONFIG_BOARD_EARLY_INIT_F
board_early_init_f(void)106 int board_early_init_f(void)
107 {
108 #ifdef CONFIG_DEBUG_UART
109 debug_uart_init();
110 #endif
111 return 0;
112 }
113 #endif
114
board_init(void)115 int board_init(void)
116 {
117 /* arch number of AT91SAM9X5EK-Board */
118 gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9X5EK;
119
120 /* adress of boot parameters */
121 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
122
123 #ifdef CONFIG_CMD_NAND
124 at91sam9x5ek_nand_hw_init();
125 #endif
126
127 #if defined(CONFIG_USB_OHCI_NEW) || defined(CONFIG_USB_EHCI_HCD)
128 at91_uhp_hw_init();
129 #endif
130 return 0;
131 }
132
dram_init(void)133 int dram_init(void)
134 {
135 gd->ram_size = get_ram_size((void *) CONFIG_SYS_SDRAM_BASE,
136 CONFIG_SYS_SDRAM_SIZE);
137 return 0;
138 }
139
140 #if defined(CONFIG_SPL_BUILD)
141 #include <spl.h>
142 #include <nand.h>
143
at91_spl_board_init(void)144 void at91_spl_board_init(void)
145 {
146 #ifdef CONFIG_SD_BOOT
147 at91_mci_hw_init();
148 #elif CONFIG_NAND_BOOT
149 at91sam9x5ek_nand_hw_init();
150 #endif
151 }
152
153 #include <asm/arch/atmel_mpddrc.h>
ddr2_conf(struct atmel_mpddrc_config * ddr2)154 static void ddr2_conf(struct atmel_mpddrc_config *ddr2)
155 {
156 ddr2->md = (ATMEL_MPDDRC_MD_DBW_16_BITS | ATMEL_MPDDRC_MD_DDR2_SDRAM);
157
158 ddr2->cr = (ATMEL_MPDDRC_CR_NC_COL_10 |
159 ATMEL_MPDDRC_CR_NR_ROW_13 |
160 ATMEL_MPDDRC_CR_CAS_DDR_CAS3 |
161 ATMEL_MPDDRC_CR_NB_8BANKS |
162 ATMEL_MPDDRC_CR_DECOD_INTERLEAVED);
163
164 ddr2->rtr = 0x411;
165
166 ddr2->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET |
167 2 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET |
168 2 << ATMEL_MPDDRC_TPR0_TWR_OFFSET |
169 8 << ATMEL_MPDDRC_TPR0_TRC_OFFSET |
170 2 << ATMEL_MPDDRC_TPR0_TRP_OFFSET |
171 2 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET |
172 2 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET |
173 2 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET);
174
175 ddr2->tpr1 = (2 << ATMEL_MPDDRC_TPR1_TXP_OFFSET |
176 200 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET |
177 19 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET |
178 18 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET);
179
180 ddr2->tpr2 = (7 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET |
181 2 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET |
182 3 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET |
183 7 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET |
184 2 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET);
185 }
186
mem_init(void)187 void mem_init(void)
188 {
189 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
190 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
191 struct atmel_mpddrc_config ddr2;
192 unsigned long csa;
193
194 ddr2_conf(&ddr2);
195
196 /* enable DDR2 clock */
197 writel(AT91_PMC_DDR, &pmc->scer);
198
199 /* Chip select 1 is for DDR2/SDRAM */
200 csa = readl(&matrix->ebicsa);
201 csa |= AT91_MATRIX_EBI_CS1A_SDRAMC;
202 csa &= ~AT91_MATRIX_EBI_DBPU_OFF;
203 csa |= AT91_MATRIX_EBI_DBPD_OFF;
204 csa |= AT91_MATRIX_EBI_EBI_IOSR_NORMAL;
205 writel(csa, &matrix->ebicsa);
206
207 /* DDRAM2 Controller initialize */
208 ddr2_init(ATMEL_BASE_DDRSDRC, ATMEL_BASE_CS1, &ddr2);
209 }
210 #endif
211