2 * (C) Copyright 2011, 2012, 2013
3 * Yuri Tikhonov, Emcraft Systems, yur@emcraft.com
4 * Alexander Potashev, Emcraft Systems, aspotashev@emcraft.com
5 * Vladimir Khusainov, Emcraft Systems, vlad@emcraft.com
6 * Pavel Boldin, Emcraft Systems, paboldin@emcraft.com
9 * Kamil Lulko, <kamil.lulko@gmail.com>
11 * SPDX-License-Identifier: GPL-2.0+
16 #include <asm/armv7m.h>
17 #include <asm/arch/stm32.h>
18 #include <asm/arch/gpio.h>
19 #include <asm/arch/fmc.h>
20 #include <dm/platdata.h>
21 #include <dm/platform_data/serial_stm32.h>
23 DECLARE_GLOBAL_DATA_PTR;
25 const struct stm32_gpio_ctl gpio_ctl_gpout = {
26 .mode = STM32_GPIO_MODE_OUT,
27 .otype = STM32_GPIO_OTYPE_PP,
28 .speed = STM32_GPIO_SPEED_50M,
29 .pupd = STM32_GPIO_PUPD_NO,
33 const struct stm32_gpio_ctl gpio_ctl_usart = {
34 .mode = STM32_GPIO_MODE_AF,
35 .otype = STM32_GPIO_OTYPE_PP,
36 .speed = STM32_GPIO_SPEED_50M,
37 .pupd = STM32_GPIO_PUPD_UP,
38 .af = STM32_GPIO_USART
41 static const struct stm32_gpio_dsc usart_gpio[] = {
42 {STM32_GPIO_PORT_X, STM32_GPIO_PIN_TX}, /* TX */
43 {STM32_GPIO_PORT_X, STM32_GPIO_PIN_RX}, /* RX */
46 int uart_setup_gpio(void)
51 for (i = 0; i < ARRAY_SIZE(usart_gpio); i++) {
52 rv = stm32_gpio_config(&usart_gpio[i], &gpio_ctl_usart);
61 const struct stm32_gpio_ctl gpio_ctl_fmc = {
62 .mode = STM32_GPIO_MODE_AF,
63 .otype = STM32_GPIO_OTYPE_PP,
64 .speed = STM32_GPIO_SPEED_100M,
65 .pupd = STM32_GPIO_PUPD_NO,
69 static const struct stm32_gpio_dsc ext_ram_fmc_gpio[] = {
70 /* Chip is LQFP144, see DM00077036.pdf for details */
71 {STM32_GPIO_PORT_D, STM32_GPIO_PIN_10}, /* 79, FMC_D15 */
72 {STM32_GPIO_PORT_D, STM32_GPIO_PIN_9}, /* 78, FMC_D14 */
73 {STM32_GPIO_PORT_D, STM32_GPIO_PIN_8}, /* 77, FMC_D13 */
74 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_15}, /* 68, FMC_D12 */
75 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_14}, /* 67, FMC_D11 */
76 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_13}, /* 66, FMC_D10 */
77 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_12}, /* 65, FMC_D9 */
78 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_11}, /* 64, FMC_D8 */
79 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_10}, /* 63, FMC_D7 */
80 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_9}, /* 60, FMC_D6 */
81 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_8}, /* 59, FMC_D5 */
82 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_7}, /* 58, FMC_D4 */
83 {STM32_GPIO_PORT_D, STM32_GPIO_PIN_1}, /* 115, FMC_D3 */
84 {STM32_GPIO_PORT_D, STM32_GPIO_PIN_0}, /* 114, FMC_D2 */
85 {STM32_GPIO_PORT_D, STM32_GPIO_PIN_15}, /* 86, FMC_D1 */
86 {STM32_GPIO_PORT_D, STM32_GPIO_PIN_14}, /* 85, FMC_D0 */
87 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_1}, /* 142, FMC_NBL1 */
88 {STM32_GPIO_PORT_E, STM32_GPIO_PIN_0}, /* 141, FMC_NBL0 */
89 {STM32_GPIO_PORT_G, STM32_GPIO_PIN_5}, /* 90, FMC_A15, BA1 */
90 {STM32_GPIO_PORT_G, STM32_GPIO_PIN_4}, /* 89, FMC_A14, BA0 */
91 {STM32_GPIO_PORT_G, STM32_GPIO_PIN_1}, /* 57, FMC_A11 */
92 {STM32_GPIO_PORT_G, STM32_GPIO_PIN_0}, /* 56, FMC_A10 */
93 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_15}, /* 55, FMC_A9 */
94 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_14}, /* 54, FMC_A8 */
95 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_13}, /* 53, FMC_A7 */
96 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_12}, /* 50, FMC_A6 */
97 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_5}, /* 15, FMC_A5 */
98 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_4}, /* 14, FMC_A4 */
99 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_3}, /* 13, FMC_A3 */
100 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_2}, /* 12, FMC_A2 */
101 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_1}, /* 11, FMC_A1 */
102 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_0}, /* 10, FMC_A0 */
103 {STM32_GPIO_PORT_B, STM32_GPIO_PIN_6}, /* 136, SDRAM_NE */
104 {STM32_GPIO_PORT_F, STM32_GPIO_PIN_11}, /* 49, SDRAM_NRAS */
105 {STM32_GPIO_PORT_G, STM32_GPIO_PIN_15}, /* 132, SDRAM_NCAS */
106 {STM32_GPIO_PORT_C, STM32_GPIO_PIN_0}, /* 26, SDRAM_NWE */
107 {STM32_GPIO_PORT_B, STM32_GPIO_PIN_5}, /* 135, SDRAM_CKE */
108 {STM32_GPIO_PORT_G, STM32_GPIO_PIN_8}, /* 93, SDRAM_CLK */
111 static int fmc_setup_gpio(void)
116 for (i = 0; i < ARRAY_SIZE(ext_ram_fmc_gpio); i++) {
117 rv = stm32_gpio_config(&ext_ram_fmc_gpio[i],
128 * STM32 RCC FMC specific definitions
130 #define STM32_RCC_ENR_FMC (1 << 0) /* FMC module clock */
132 static inline u32 _ns2clk(u32 ns, u32 freq)
134 u32 tmp = freq/1000000;
135 return (tmp * ns) / 1000;
138 #define NS2CLK(ns) (_ns2clk(ns, freq))
141 * Following are timings for IS42S16400J, from corresponding datasheet
143 #define SDRAM_CAS 3 /* 3 cycles */
144 #define SDRAM_NB 1 /* Number of banks */
145 #define SDRAM_MWID 1 /* 16 bit memory */
147 #define SDRAM_NR 0x1 /* 12-bit row */
148 #define SDRAM_NC 0x0 /* 8-bit col */
149 #define SDRAM_RBURST 0x1 /* Single read requests always as bursts */
150 #define SDRAM_RPIPE 0x0 /* No HCLK clock cycle delay */
152 #define SDRAM_TRRD (NS2CLK(14) - 1)
153 #define SDRAM_TRCD (NS2CLK(15) - 1)
154 #define SDRAM_TRP (NS2CLK(15) - 1)
155 #define SDRAM_TRAS (NS2CLK(42) - 1)
156 #define SDRAM_TRC (NS2CLK(63) - 1)
157 #define SDRAM_TRFC (NS2CLK(63) - 1)
158 #define SDRAM_TCDL (1 - 1)
159 #define SDRAM_TRDL (2 - 1)
160 #define SDRAM_TBDL (1 - 1)
161 #define SDRAM_TREF 1386
162 #define SDRAM_TCCD (1 - 1)
164 #define SDRAM_TXSR (NS2CLK(70) - 1)/* Row cycle time after precharge */
165 #define SDRAM_TMRD (3 - 1) /* Page 10, Mode Register Set */
167 /* Last data-in to row precharge, need also comply ineq from RM 37.7.5 */
168 #define SDRAM_TWR max(\
169 (int)max((int)SDRAM_TRDL, (int)(SDRAM_TRAS - SDRAM_TRCD - 1)), \
170 (int)(SDRAM_TRC - SDRAM_TRCD - SDRAM_TRP - 2)\
173 #define SDRAM_MODE_BL_SHIFT 0
174 #define SDRAM_MODE_CAS_SHIFT 4
175 #define SDRAM_MODE_BL 0
176 #define SDRAM_MODE_CAS SDRAM_CAS
183 rv = fmc_setup_gpio();
187 setbits_le32(&STM32_RCC->ahb3enr, STM32_RCC_ENR_FMC);
190 * Get frequency for NS2CLK calculation.
192 freq = clock_get(CLOCK_AHB) / CONFIG_SYS_RAM_FREQ_DIV;
194 writel(CONFIG_SYS_RAM_FREQ_DIV << FMC_SDCR_SDCLK_SHIFT
195 | SDRAM_RPIPE << FMC_SDCR_RPIPE_SHIFT
196 | SDRAM_RBURST << FMC_SDCR_RBURST_SHIFT,
197 &STM32_SDRAM_FMC->sdcr1);
199 writel(CONFIG_SYS_RAM_FREQ_DIV << FMC_SDCR_SDCLK_SHIFT
200 | SDRAM_CAS << FMC_SDCR_CAS_SHIFT
201 | SDRAM_NB << FMC_SDCR_NB_SHIFT
202 | SDRAM_MWID << FMC_SDCR_MWID_SHIFT
203 | SDRAM_NR << FMC_SDCR_NR_SHIFT
204 | SDRAM_NC << FMC_SDCR_NC_SHIFT
205 | SDRAM_RPIPE << FMC_SDCR_RPIPE_SHIFT
206 | SDRAM_RBURST << FMC_SDCR_RBURST_SHIFT,
207 &STM32_SDRAM_FMC->sdcr2);
209 writel(SDRAM_TRP << FMC_SDTR_TRP_SHIFT
210 | SDRAM_TRC << FMC_SDTR_TRC_SHIFT,
211 &STM32_SDRAM_FMC->sdtr1);
213 writel(SDRAM_TRCD << FMC_SDTR_TRCD_SHIFT
214 | SDRAM_TRP << FMC_SDTR_TRP_SHIFT
215 | SDRAM_TWR << FMC_SDTR_TWR_SHIFT
216 | SDRAM_TRC << FMC_SDTR_TRC_SHIFT
217 | SDRAM_TRAS << FMC_SDTR_TRAS_SHIFT
218 | SDRAM_TXSR << FMC_SDTR_TXSR_SHIFT
219 | SDRAM_TMRD << FMC_SDTR_TMRD_SHIFT,
220 &STM32_SDRAM_FMC->sdtr2);
222 writel(FMC_SDCMR_BANK_2 | FMC_SDCMR_MODE_START_CLOCK,
223 &STM32_SDRAM_FMC->sdcmr);
225 udelay(200); /* 200 us delay, page 10, "Power-Up" */
228 writel(FMC_SDCMR_BANK_2 | FMC_SDCMR_MODE_PRECHARGE,
229 &STM32_SDRAM_FMC->sdcmr);
234 writel((FMC_SDCMR_BANK_2 | FMC_SDCMR_MODE_AUTOREFRESH
235 | 7 << FMC_SDCMR_NRFS_SHIFT), &STM32_SDRAM_FMC->sdcmr);
240 writel(FMC_SDCMR_BANK_2 | (SDRAM_MODE_BL << SDRAM_MODE_BL_SHIFT
241 | SDRAM_MODE_CAS << SDRAM_MODE_CAS_SHIFT)
242 << FMC_SDCMR_MODE_REGISTER_SHIFT | FMC_SDCMR_MODE_WRITE_MODE,
243 &STM32_SDRAM_FMC->sdcmr);
249 writel(FMC_SDCMR_BANK_2 | FMC_SDCMR_MODE_NORMAL,
250 &STM32_SDRAM_FMC->sdcmr);
255 writel(SDRAM_TREF, &STM32_SDRAM_FMC->sdrtr);
258 * Fill in global info with description of SRAM configuration
260 gd->bd->bi_dram[0].start = CONFIG_SYS_RAM_BASE;
261 gd->bd->bi_dram[0].size = CONFIG_SYS_RAM_SIZE;
263 gd->ram_size = CONFIG_SYS_RAM_SIZE;
268 static const struct stm32_serial_platdata serial_platdata = {
269 .base = (struct stm32_usart *)STM32_USART1_BASE,
272 U_BOOT_DEVICE(stm32_serials) = {
273 .name = "serial_stm32",
274 .platdata = &serial_platdata,
277 u32 get_board_rev(void)
282 int board_early_init_f(void)
286 res = uart_setup_gpio();
295 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
300 #ifdef CONFIG_MISC_INIT_R
301 int misc_init_r(void)
304 uint32_t u_id_low, u_id_mid, u_id_high;
306 if (!getenv("serial#")) {
307 u_id_low = readl(&STM32_U_ID->u_id_low);
308 u_id_mid = readl(&STM32_U_ID->u_id_mid);
309 u_id_high = readl(&STM32_U_ID->u_id_high);
310 sprintf(serialno, "%08x%08x%08x",
311 u_id_high, u_id_mid, u_id_low);
312 setenv("serial#", serialno);