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 <environment.h>
20 #include <asm/arch/at91sam9260_matrix.h>
21 #include <asm/arch/at91sam9_smc.h>
22 #include <asm/arch/at91_common.h>
23 #include <asm/arch/at91_rstc.h>
24 #include <asm/arch/gpio.h>
25 #include <asm/arch/at91sam9_sdramc.h>
26 #include <asm/arch/atmel_serial.h>
27 #include <asm/arch/clk.h>
29 #include <linux/mtd/nand.h>
30 #include <atmel_mci.h>
31 #include <asm/arch/at91_spi.h>
39 DECLARE_GLOBAL_DATA_PTR;
41 static void taurus_request_gpio(void)
43 gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand ena");
44 gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand rdy");
45 gpio_request(AT91_PIN_PA25, "ena PHY");
48 static void taurus_nand_hw_init(void)
50 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
51 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
54 /* Assign CS3 to NAND/SmartMedia Interface */
55 csa = readl(&matrix->ebicsa);
56 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
57 writel(csa, &matrix->ebicsa);
59 /* Configure SMC CS3 for NAND/SmartMedia */
60 writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
61 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
63 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(3) |
64 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(3),
66 writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
68 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
69 AT91_SMC_MODE_EXNW_DISABLE |
71 AT91_SMC_MODE_TDF_CYCLE(3),
74 /* Configure RDY/BSY */
75 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
77 /* Enable NandFlash */
78 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
81 #if defined(CONFIG_SPL_BUILD)
84 #include <spi_flash.h>
86 void matrix_init(void)
88 struct at91_matrix *mat = (struct at91_matrix *)ATMEL_BASE_MATRIX;
90 writel((readl(&mat->scfg[3]) & (~AT91_MATRIX_SLOT_CYCLE))
91 | AT91_MATRIX_SLOT_CYCLE_(0x40),
95 #if defined(CONFIG_BOARD_AXM)
96 static int at91_is_recovery(void)
98 if ((at91_get_gpio_value(AT91_PIN_PA26) == 0) &&
99 (at91_get_gpio_value(AT91_PIN_PA27) == 0))
104 #elif defined(CONFIG_BOARD_TAURUS)
105 static int at91_is_recovery(void)
107 if (at91_get_gpio_value(AT91_PIN_PA31) == 0)
114 void spl_board_init(void)
116 taurus_nand_hw_init();
117 at91_spi0_hw_init(TAURUS_SPI_MASK);
119 #if defined(CONFIG_BOARD_AXM)
120 /* Configure LED PINs */
121 at91_set_gpio_output(AT91_PIN_PA6, 0);
122 at91_set_gpio_output(AT91_PIN_PA8, 0);
123 at91_set_gpio_output(AT91_PIN_PA9, 0);
124 at91_set_gpio_output(AT91_PIN_PA10, 0);
125 at91_set_gpio_output(AT91_PIN_PA11, 0);
126 at91_set_gpio_output(AT91_PIN_PA12, 0);
128 /* Configure recovery button PINs */
129 at91_set_gpio_input(AT91_PIN_PA26, 1);
130 at91_set_gpio_input(AT91_PIN_PA27, 1);
131 #elif defined(CONFIG_BOARD_TAURUS)
132 at91_set_gpio_input(AT91_PIN_PA31, 1);
135 /* check for recovery mode */
136 if (at91_is_recovery() == 1) {
137 struct spi_flash *flash;
139 puts("Recovery button pressed\n");
141 spl_nand_erase_one(0, 0);
142 flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
144 CONFIG_SF_DEFAULT_SPEED,
145 CONFIG_SF_DEFAULT_MODE);
149 puts("erase spi flash sector 0\n");
150 spi_flash_erase(flash, 0,
151 CONFIG_SYS_NAND_U_BOOT_SIZE);
156 #define SDRAM_BASE_CONF (AT91_SDRAMC_NR_13 | AT91_SDRAMC_CAS_3 \
157 |AT91_SDRAMC_NB_4 | AT91_SDRAMC_DBW_32 \
158 | AT91_SDRAMC_TWR_VAL(3) | AT91_SDRAMC_TRC_VAL(9) \
159 | AT91_SDRAMC_TRP_VAL(3) | AT91_SDRAMC_TRCD_VAL(3) \
160 | AT91_SDRAMC_TRAS_VAL(6) | AT91_SDRAMC_TXSR_VAL(10))
162 void sdramc_configure(unsigned int mask)
164 struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
165 struct sdramc_reg setting;
167 at91_sdram_hw_init();
168 setting.cr = SDRAM_BASE_CONF | mask;
169 setting.mdr = AT91_SDRAMC_MD_SDRAM;
170 setting.tr = (CONFIG_SYS_MASTER_CLOCK * 7) / 1000000;
172 writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC |
173 AT91_MATRIX_VDDIOMSEL_3_3V | AT91_MATRIX_EBI_IOSR_SEL,
176 sdramc_initialize(ATMEL_BASE_CS1, &setting);
181 unsigned int ram_size = 0;
183 /* Configure SDRAM for 128MB */
184 sdramc_configure(AT91_SDRAMC_NC_10);
186 /* Do memtest for 128MB */
187 ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
188 CONFIG_SYS_SDRAM_SIZE);
191 * If 32MB or 16MB should be supported check also for
192 * expected mirroring at A16 and A17
193 * To find mirror addresses depends how the collumns are connected
194 * at RAM (internaly or externaly)
195 * If the collumns are not in inverted order the mirror size effect
196 * behaves like normal SRAM with A0,A1,A2,etc. connected incremantal
199 /* Mirrors at A15 on ATMEL G20 SDRAM Controller with 64MB*/
200 if (ram_size == 0x800) {
202 sdramc_configure(AT91_SDRAMC_NC_9);
204 /* Size already initialized */
205 printf("\n\r 128MB");
211 static void siemens_phy_reset(void)
214 * we need to reset PHY for 200us
215 * because of bug in ATMEL G20 CPU (undefined initial state of GPIO)
217 if ((readl(AT91_ASM_RSTC_SR) & AT91_RSTC_RSTTYP) ==
218 AT91_RSTC_RSTTYP_GENERAL)
219 at91_set_gpio_value(AT91_PIN_PA25, 0); /* reset eth switch */
222 static void taurus_macb_hw_init(void)
224 /* Enable EMAC clock */
225 at91_periph_clk_enable(ATMEL_ID_EMAC0);
228 * Disable pull-up on:
229 * RXDV (PA17) => PHY normal mode (not Test mode)
230 * ERX0 (PA14) => PHY ADDR0
231 * ERX1 (PA15) => PHY ADDR1
232 * ERX2 (PA25) => PHY ADDR2
233 * ERX3 (PA26) => PHY ADDR3
234 * ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
236 * PHY has internal pull-down
238 at91_set_pio_pullup(AT91_PIO_PORTA, 14, 0);
239 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
240 at91_set_pio_pullup(AT91_PIO_PORTA, 17, 0);
241 at91_set_pio_pullup(AT91_PIO_PORTA, 25, 0);
242 at91_set_pio_pullup(AT91_PIO_PORTA, 26, 0);
243 at91_set_pio_pullup(AT91_PIO_PORTA, 28, 0);
249 at91_set_gpio_input(AT91_PIN_PA25, 1); /* ERST tri-state */
251 /* Re-enable pull-up */
252 at91_set_pio_pullup(AT91_PIO_PORTA, 14, 1);
253 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
254 at91_set_pio_pullup(AT91_PIO_PORTA, 17, 1);
255 at91_set_pio_pullup(AT91_PIO_PORTA, 25, 1);
256 at91_set_pio_pullup(AT91_PIO_PORTA, 26, 1);
257 at91_set_pio_pullup(AT91_PIO_PORTA, 28, 1);
259 /* Initialize EMAC=MACB hardware */
264 #ifdef CONFIG_GENERIC_ATMEL_MCI
265 int board_mmc_init(bd_t *bd)
269 return atmel_mci_init((void *)ATMEL_BASE_MCI);
273 int board_early_init_f(void)
275 /* Enable clocks for all PIOs */
276 at91_periph_clk_enable(ATMEL_ID_PIOA);
277 at91_periph_clk_enable(ATMEL_ID_PIOB);
278 at91_periph_clk_enable(ATMEL_ID_PIOC);
280 at91_seriald_hw_init();
281 taurus_request_gpio();
286 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
288 return bus == 0 && cs == 0;
291 void spi_cs_activate(struct spi_slave *slave)
293 at91_set_gpio_value(TAURUS_SPI_CS_PIN, 0);
296 void spi_cs_deactivate(struct spi_slave *slave)
298 at91_set_gpio_value(TAURUS_SPI_CS_PIN, 1);
301 #ifdef CONFIG_USB_GADGET_AT91
302 #include <linux/usb/at91_udc.h>
304 void at91_udp_hw_init(void)
307 at91_pllb_clk_enable(get_pllb_init());
309 /* Enable UDPCK clock, MCK is enabled in at91_clock_init() */
310 at91_periph_clk_enable(ATMEL_ID_UDP);
312 at91_system_clk_enable(AT91SAM926x_PMC_UDP);
315 struct at91_udc_data board_udc_data = {
316 .baseaddr = ATMEL_BASE_UDP0,
322 /* adress of boot parameters */
323 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
325 taurus_request_gpio();
326 #ifdef CONFIG_CMD_NAND
327 taurus_nand_hw_init();
330 taurus_macb_hw_init();
332 at91_spi0_hw_init(TAURUS_SPI_MASK);
333 #ifdef CONFIG_USB_GADGET_AT91
335 at91_udc_probe(&board_udc_data);
343 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
344 CONFIG_SYS_SDRAM_SIZE);
348 #ifndef CONFIG_DM_ETH
349 int board_eth_init(bd_t *bis)
353 rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
359 #if !defined(CONFIG_SPL_BUILD)
360 #if defined(CONFIG_BOARD_AXM)
362 * Booting the Fallback Image.
364 * The function is used to provide and
365 * boot the image with the fallback
366 * parameters, incase if the faulty image
367 * in upgraded over the base firmware.
370 static int upgrade_failure_fallback(void)
372 char *partitionset_active = NULL;
374 char *rootfs_fallback = NULL;
380 partitionset_active = env_get("partitionset_active");
381 if (partitionset_active) {
382 if (partitionset_active[0] == 'A')
383 env_set("partitionset_active", "B");
385 env_set("partitionset_active", "A");
387 printf("partitionset_active missing.\n");
391 rootfs = env_get("rootfs");
392 rootfs_fallback = env_get("rootfs_fallback");
393 env_set("rootfs", rootfs_fallback);
394 env_set("rootfs_fallback", rootfs);
396 kern_size = env_get("kernel_size");
397 kern_size_fb = env_get("kernel_size_fallback");
398 env_set("kernel_size", kern_size_fb);
399 env_set("kernel_size_fallback", kern_size);
401 kern_off = env_get("kernel_Off");
402 kern_off_fb = env_get("kernel_Off_fallback");
403 env_set("kernel_Off", kern_off_fb);
404 env_set("kernel_Off_fallback", kern_off);
406 env_set("bootargs", '\0');
407 env_set("upgrade_available", '\0');
408 env_set("boot_retries", '\0');
414 static int do_upgrade_available(cmd_tbl_t *cmdtp, int flag, int argc,
417 unsigned long upgrade_available = 0;
418 unsigned long boot_retry = 0;
421 upgrade_available = simple_strtoul(env_get("upgrade_available"), NULL,
423 if (upgrade_available) {
424 boot_retry = simple_strtoul(env_get("boot_retries"), NULL, 10);
426 sprintf(boot_buf, "%lx", boot_retry);
427 env_set("boot_retries", boot_buf);
431 * Here the boot_retries count is checked, and if the
432 * count becomes greater than 2 switch back to the
433 * fallback, and reset the board.
436 if (boot_retry > 2) {
437 if (upgrade_failure_fallback() == 0)
438 do_reset(NULL, 0, 0, NULL);
446 upgrade_available, 1, 1, do_upgrade_available,
447 "check Siemens update",