2 * Board functions for Siemens TAURUS (AT91SAM9G20) based boards
3 * (C) Copyright Siemens AG
6 * U-Boot file: board/atmel/at91sam9260ek/at91sam9260ek.c
8 * (C) Copyright 2007-2008
9 * Stelian Pop <stelian@popies.net>
10 * Lead Tech Design <www.leadtechdesign.com>
12 * SPDX-License-Identifier: GPL-2.0+
18 #include <asm/arch/at91sam9260_matrix.h>
19 #include <asm/arch/at91sam9_smc.h>
20 #include <asm/arch/at91_common.h>
21 #include <asm/arch/at91_pmc.h>
22 #include <asm/arch/at91_rstc.h>
23 #include <asm/arch/gpio.h>
24 #include <asm/arch/at91sam9_sdramc.h>
25 #include <asm/arch/clk.h>
26 #include <linux/mtd/nand.h>
27 #include <atmel_mci.h>
28 #include <asm/arch/at91_spi.h>
34 DECLARE_GLOBAL_DATA_PTR;
36 static void taurus_nand_hw_init(void)
38 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
39 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
42 /* Assign CS3 to NAND/SmartMedia Interface */
43 csa = readl(&matrix->ebicsa);
44 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
45 writel(csa, &matrix->ebicsa);
47 /* Configure SMC CS3 for NAND/SmartMedia */
48 writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
49 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
51 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(3) |
52 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(3),
54 writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
56 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
57 AT91_SMC_MODE_EXNW_DISABLE |
59 AT91_SMC_MODE_TDF_CYCLE(3),
62 /* Configure RDY/BSY */
63 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
65 /* Enable NandFlash */
66 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
69 #if defined(CONFIG_SPL_BUILD)
72 #include <spi_flash.h>
74 void matrix_init(void)
76 struct at91_matrix *mat = (struct at91_matrix *)ATMEL_BASE_MATRIX;
78 writel((readl(&mat->scfg[3]) & (~AT91_MATRIX_SLOT_CYCLE))
79 | AT91_MATRIX_SLOT_CYCLE_(0x40),
83 #if defined(CONFIG_BOARD_AXM)
84 static int at91_is_recovery(void)
86 if ((at91_get_gpio_value(AT91_PIN_PA26) == 0) &&
87 (at91_get_gpio_value(AT91_PIN_PA27) == 0))
92 #elif defined(CONFIG_BOARD_TAURUS)
93 static int at91_is_recovery(void)
95 if (at91_get_gpio_value(AT91_PIN_PA31) == 0)
102 void spl_board_init(void)
104 taurus_nand_hw_init();
105 at91_spi0_hw_init(TAURUS_SPI_MASK);
107 #if defined(CONFIG_BOARD_AXM)
108 /* Configure LED PINs */
109 at91_set_gpio_output(AT91_PIN_PA6, 0);
110 at91_set_gpio_output(AT91_PIN_PA8, 0);
111 at91_set_gpio_output(AT91_PIN_PA9, 0);
112 at91_set_gpio_output(AT91_PIN_PA10, 0);
113 at91_set_gpio_output(AT91_PIN_PA11, 0);
114 at91_set_gpio_output(AT91_PIN_PA12, 0);
116 /* Configure recovery button PINs */
117 at91_set_gpio_input(AT91_PIN_PA26, 1);
118 at91_set_gpio_input(AT91_PIN_PA27, 1);
119 #elif defined(CONFIG_BOARD_TAURUS)
120 at91_set_gpio_input(AT91_PIN_PA31, 1);
123 /* check for recovery mode */
124 if (at91_is_recovery() == 1) {
125 struct spi_flash *flash;
127 puts("Recovery button pressed\n");
129 spl_nand_erase_one(0, 0);
130 flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
132 CONFIG_SF_DEFAULT_SPEED,
133 CONFIG_SF_DEFAULT_MODE);
137 puts("erase spi flash sector 0\n");
138 spi_flash_erase(flash, 0,
139 CONFIG_SYS_NAND_U_BOOT_SIZE);
144 #define SDRAM_BASE_CONF (AT91_SDRAMC_NR_13 | AT91_SDRAMC_CAS_3 \
145 |AT91_SDRAMC_NB_4 | AT91_SDRAMC_DBW_32 \
146 | AT91_SDRAMC_TWR_VAL(3) | AT91_SDRAMC_TRC_VAL(9) \
147 | AT91_SDRAMC_TRP_VAL(3) | AT91_SDRAMC_TRCD_VAL(3) \
148 | AT91_SDRAMC_TRAS_VAL(6) | AT91_SDRAMC_TXSR_VAL(10))
150 void sdramc_configure(unsigned int mask)
152 struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
153 struct sdramc_reg setting;
155 at91_sdram_hw_init();
156 setting.cr = SDRAM_BASE_CONF | mask;
157 setting.mdr = AT91_SDRAMC_MD_SDRAM;
158 setting.tr = (CONFIG_SYS_MASTER_CLOCK * 7) / 1000000;
160 writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC |
161 AT91_MATRIX_VDDIOMSEL_3_3V | AT91_MATRIX_EBI_IOSR_SEL,
164 sdramc_initialize(ATMEL_BASE_CS1, &setting);
169 unsigned int ram_size = 0;
171 /* Configure SDRAM for 128MB */
172 sdramc_configure(AT91_SDRAMC_NC_10);
174 /* Do memtest for 128MB */
175 ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
176 CONFIG_SYS_SDRAM_SIZE);
179 * If 32MB or 16MB should be supported check also for
180 * expected mirroring at A16 and A17
181 * To find mirror addresses depends how the collumns are connected
182 * at RAM (internaly or externaly)
183 * If the collumns are not in inverted order the mirror size effect
184 * behaves like normal SRAM with A0,A1,A2,etc. connected incremantal
187 /* Mirrors at A15 on ATMEL G20 SDRAM Controller with 64MB*/
188 if (ram_size == 0x800) {
190 sdramc_configure(AT91_SDRAMC_NC_9);
192 /* Size already initialized */
193 printf("\n\r 128MB");
199 static void siemens_phy_reset(void)
202 * we need to reset PHY for 200us
203 * because of bug in ATMEL G20 CPU (undefined initial state of GPIO)
205 if ((readl(AT91_ASM_RSTC_SR) & AT91_RSTC_RSTTYP) ==
206 AT91_RSTC_RSTTYP_GENERAL)
207 at91_set_gpio_value(AT91_PIN_PA25, 0); /* reset eth switch */
210 static void taurus_macb_hw_init(void)
212 /* Enable EMAC clock */
213 at91_periph_clk_enable(ATMEL_ID_EMAC0);
216 * Disable pull-up on:
217 * RXDV (PA17) => PHY normal mode (not Test mode)
218 * ERX0 (PA14) => PHY ADDR0
219 * ERX1 (PA15) => PHY ADDR1
220 * ERX2 (PA25) => PHY ADDR2
221 * ERX3 (PA26) => PHY ADDR3
222 * ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
224 * PHY has internal pull-down
226 at91_set_pio_pullup(AT91_PIO_PORTA, 14, 0);
227 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
228 at91_set_pio_pullup(AT91_PIO_PORTA, 17, 0);
229 at91_set_pio_pullup(AT91_PIO_PORTA, 25, 0);
230 at91_set_pio_pullup(AT91_PIO_PORTA, 26, 0);
231 at91_set_pio_pullup(AT91_PIO_PORTA, 28, 0);
237 at91_set_gpio_input(AT91_PIN_PA25, 1); /* ERST tri-state */
239 /* Re-enable pull-up */
240 at91_set_pio_pullup(AT91_PIO_PORTA, 14, 1);
241 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
242 at91_set_pio_pullup(AT91_PIO_PORTA, 17, 1);
243 at91_set_pio_pullup(AT91_PIO_PORTA, 25, 1);
244 at91_set_pio_pullup(AT91_PIO_PORTA, 26, 1);
245 at91_set_pio_pullup(AT91_PIO_PORTA, 28, 1);
247 /* Initialize EMAC=MACB hardware */
252 #ifdef CONFIG_GENERIC_ATMEL_MCI
253 int board_mmc_init(bd_t *bd)
257 return atmel_mci_init((void *)ATMEL_BASE_MCI);
261 int board_early_init_f(void)
263 /* Enable clocks for all PIOs */
264 at91_periph_clk_enable(ATMEL_ID_PIOA);
265 at91_periph_clk_enable(ATMEL_ID_PIOB);
266 at91_periph_clk_enable(ATMEL_ID_PIOC);
268 at91_seriald_hw_init();
273 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
275 return bus == 0 && cs == 0;
278 void spi_cs_activate(struct spi_slave *slave)
280 at91_set_gpio_value(TAURUS_SPI_CS_PIN, 0);
283 void spi_cs_deactivate(struct spi_slave *slave)
285 at91_set_gpio_value(TAURUS_SPI_CS_PIN, 1);
290 /* adress of boot parameters */
291 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
293 #ifdef CONFIG_CMD_NAND
294 taurus_nand_hw_init();
297 taurus_macb_hw_init();
299 at91_spi0_hw_init(TAURUS_SPI_MASK);
306 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
307 CONFIG_SYS_SDRAM_SIZE);
311 int board_eth_init(bd_t *bis)
315 rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
320 #if !defined(CONFIG_SPL_BUILD)
321 #if defined(CONFIG_BOARD_AXM)
323 * Booting the Fallback Image.
325 * The function is used to provide and
326 * boot the image with the fallback
327 * parameters, incase if the faulty image
328 * in upgraded over the base firmware.
331 static int upgrade_failure_fallback(void)
333 char *partitionset_active = NULL;
335 char *rootfs_fallback = NULL;
341 partitionset_active = getenv("partitionset_active");
342 if (partitionset_active) {
343 if (partitionset_active[0] == 'A')
344 setenv("partitionset_active", "B");
346 setenv("partitionset_active", "A");
348 printf("partitionset_active missing.\n");
352 rootfs = getenv("rootfs");
353 rootfs_fallback = getenv("rootfs_fallback");
354 setenv("rootfs", rootfs_fallback);
355 setenv("rootfs_fallback", rootfs);
357 kern_size = getenv("kernel_size");
358 kern_size_fb = getenv("kernel_size_fallback");
359 setenv("kernel_size", kern_size_fb);
360 setenv("kernel_size_fallback", kern_size);
362 kern_off = getenv("kernel_Off");
363 kern_off_fb = getenv("kernel_Off_fallback");
364 setenv("kernel_Off", kern_off_fb);
365 setenv("kernel_Off_fallback", kern_off);
367 setenv("bootargs", '\0');
368 setenv("upgrade_available", '\0');
369 setenv("boot_retries", '\0');
375 static int do_upgrade_available(cmd_tbl_t *cmdtp, int flag, int argc,
378 unsigned long upgrade_available = 0;
379 unsigned long boot_retry = 0;
382 upgrade_available = simple_strtoul(getenv("upgrade_available"), NULL,
384 if (upgrade_available) {
385 boot_retry = simple_strtoul(getenv("boot_retries"), NULL, 10);
387 sprintf(boot_buf, "%lx", boot_retry);
388 setenv("boot_retries", boot_buf);
392 * Here the boot_retries count is checked, and if the
393 * count becomes greater than 2 switch back to the
394 * fallback, and reset the board.
397 if (boot_retry > 2) {
398 if (upgrade_failure_fallback() == 0)
399 do_reset(NULL, 0, 0, NULL);
407 upgrade_available, 1, 1, do_upgrade_available,
408 "check Siemens update",