1 // SPDX-License-Identifier: GPL-2.0+
3 * Board functions for Siemens TAURUS (AT91SAM9G20) based boards
4 * (C) Copyright Siemens AG
7 * U-Boot file: board/atmel/at91sam9260ek/at91sam9260ek.c
9 * (C) Copyright 2007-2008
10 * Stelian Pop <stelian@popies.net>
11 * Lead Tech Design <www.leadtechdesign.com>
17 #include <environment.h>
19 #include <asm/arch/at91sam9260_matrix.h>
20 #include <asm/arch/at91sam9_smc.h>
21 #include <asm/arch/at91_common.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/atmel_serial.h>
26 #include <asm/arch/clk.h>
28 #include <linux/mtd/rawnand.h>
29 #include <atmel_mci.h>
30 #include <asm/arch/at91_spi.h>
38 DECLARE_GLOBAL_DATA_PTR;
40 static void taurus_request_gpio(void)
42 gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand ena");
43 gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand rdy");
44 gpio_request(AT91_PIN_PA25, "ena PHY");
47 static void taurus_nand_hw_init(void)
49 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
50 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
53 /* Assign CS3 to NAND/SmartMedia Interface */
54 csa = readl(&matrix->ebicsa);
55 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
56 writel(csa, &matrix->ebicsa);
58 /* Configure SMC CS3 for NAND/SmartMedia */
59 writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
60 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
62 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(3) |
63 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(3),
65 writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
67 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
68 AT91_SMC_MODE_EXNW_DISABLE |
70 AT91_SMC_MODE_TDF_CYCLE(3),
73 /* Configure RDY/BSY */
74 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
76 /* Enable NandFlash */
77 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
80 #if defined(CONFIG_SPL_BUILD)
83 #include <spi_flash.h>
85 void matrix_init(void)
87 struct at91_matrix *mat = (struct at91_matrix *)ATMEL_BASE_MATRIX;
89 writel((readl(&mat->scfg[3]) & (~AT91_MATRIX_SLOT_CYCLE))
90 | AT91_MATRIX_SLOT_CYCLE_(0x40),
94 #if defined(CONFIG_BOARD_AXM)
95 static int at91_is_recovery(void)
97 if ((at91_get_gpio_value(AT91_PIN_PA26) == 0) &&
98 (at91_get_gpio_value(AT91_PIN_PA27) == 0))
103 #elif defined(CONFIG_BOARD_TAURUS)
104 static int at91_is_recovery(void)
106 if (at91_get_gpio_value(AT91_PIN_PA31) == 0)
113 void spl_board_init(void)
115 taurus_nand_hw_init();
116 at91_spi0_hw_init(TAURUS_SPI_MASK);
118 #if defined(CONFIG_BOARD_AXM)
119 /* Configure LED PINs */
120 at91_set_gpio_output(AT91_PIN_PA6, 0);
121 at91_set_gpio_output(AT91_PIN_PA8, 0);
122 at91_set_gpio_output(AT91_PIN_PA9, 0);
123 at91_set_gpio_output(AT91_PIN_PA10, 0);
124 at91_set_gpio_output(AT91_PIN_PA11, 0);
125 at91_set_gpio_output(AT91_PIN_PA12, 0);
127 /* Configure recovery button PINs */
128 at91_set_gpio_input(AT91_PIN_PA26, 1);
129 at91_set_gpio_input(AT91_PIN_PA27, 1);
130 #elif defined(CONFIG_BOARD_TAURUS)
131 at91_set_gpio_input(AT91_PIN_PA31, 1);
134 /* check for recovery mode */
135 if (at91_is_recovery() == 1) {
136 struct spi_flash *flash;
138 puts("Recovery button pressed\n");
140 spl_nand_erase_one(0, 0);
141 flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
143 CONFIG_SF_DEFAULT_SPEED,
144 CONFIG_SF_DEFAULT_MODE);
148 puts("erase spi flash sector 0\n");
149 spi_flash_erase(flash, 0,
150 CONFIG_SYS_NAND_U_BOOT_SIZE);
155 #define SDRAM_BASE_CONF (AT91_SDRAMC_NR_13 | AT91_SDRAMC_CAS_3 \
156 |AT91_SDRAMC_NB_4 | AT91_SDRAMC_DBW_32 \
157 | AT91_SDRAMC_TWR_VAL(3) | AT91_SDRAMC_TRC_VAL(9) \
158 | AT91_SDRAMC_TRP_VAL(3) | AT91_SDRAMC_TRCD_VAL(3) \
159 | AT91_SDRAMC_TRAS_VAL(6) | AT91_SDRAMC_TXSR_VAL(10))
161 void sdramc_configure(unsigned int mask)
163 struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
164 struct sdramc_reg setting;
166 at91_sdram_hw_init();
167 setting.cr = SDRAM_BASE_CONF | mask;
168 setting.mdr = AT91_SDRAMC_MD_SDRAM;
169 setting.tr = (CONFIG_SYS_MASTER_CLOCK * 7) / 1000000;
171 writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC |
172 AT91_MATRIX_VDDIOMSEL_3_3V | AT91_MATRIX_EBI_IOSR_SEL,
175 sdramc_initialize(ATMEL_BASE_CS1, &setting);
180 unsigned int ram_size = 0;
182 /* Configure SDRAM for 128MB */
183 sdramc_configure(AT91_SDRAMC_NC_10);
185 /* Do memtest for 128MB */
186 ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
187 CONFIG_SYS_SDRAM_SIZE);
190 * If 32MB or 16MB should be supported check also for
191 * expected mirroring at A16 and A17
192 * To find mirror addresses depends how the collumns are connected
193 * at RAM (internaly or externaly)
194 * If the collumns are not in inverted order the mirror size effect
195 * behaves like normal SRAM with A0,A1,A2,etc. connected incremantal
198 /* Mirrors at A15 on ATMEL G20 SDRAM Controller with 64MB*/
199 if (ram_size == 0x800) {
201 sdramc_configure(AT91_SDRAMC_NC_9);
203 /* Size already initialized */
204 printf("\n\r 128MB");
210 static void siemens_phy_reset(void)
213 * we need to reset PHY for 200us
214 * because of bug in ATMEL G20 CPU (undefined initial state of GPIO)
216 if ((readl(AT91_ASM_RSTC_SR) & AT91_RSTC_RSTTYP) ==
217 AT91_RSTC_RSTTYP_GENERAL)
218 at91_set_gpio_value(AT91_PIN_PA25, 0); /* reset eth switch */
221 static void taurus_macb_hw_init(void)
223 /* Enable EMAC clock */
224 at91_periph_clk_enable(ATMEL_ID_EMAC0);
227 * Disable pull-up on:
228 * RXDV (PA17) => PHY normal mode (not Test mode)
229 * ERX0 (PA14) => PHY ADDR0
230 * ERX1 (PA15) => PHY ADDR1
231 * ERX2 (PA25) => PHY ADDR2
232 * ERX3 (PA26) => PHY ADDR3
233 * ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
235 * PHY has internal pull-down
237 at91_set_pio_pullup(AT91_PIO_PORTA, 14, 0);
238 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
239 at91_set_pio_pullup(AT91_PIO_PORTA, 17, 0);
240 at91_set_pio_pullup(AT91_PIO_PORTA, 25, 0);
241 at91_set_pio_pullup(AT91_PIO_PORTA, 26, 0);
242 at91_set_pio_pullup(AT91_PIO_PORTA, 28, 0);
248 at91_set_gpio_input(AT91_PIN_PA25, 1); /* ERST tri-state */
250 /* Re-enable pull-up */
251 at91_set_pio_pullup(AT91_PIO_PORTA, 14, 1);
252 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
253 at91_set_pio_pullup(AT91_PIO_PORTA, 17, 1);
254 at91_set_pio_pullup(AT91_PIO_PORTA, 25, 1);
255 at91_set_pio_pullup(AT91_PIO_PORTA, 26, 1);
256 at91_set_pio_pullup(AT91_PIO_PORTA, 28, 1);
258 /* Initialize EMAC=MACB hardware */
263 #ifdef CONFIG_GENERIC_ATMEL_MCI
264 int board_mmc_init(bd_t *bd)
268 return atmel_mci_init((void *)ATMEL_BASE_MCI);
272 int board_early_init_f(void)
274 /* Enable clocks for all PIOs */
275 at91_periph_clk_enable(ATMEL_ID_PIOA);
276 at91_periph_clk_enable(ATMEL_ID_PIOB);
277 at91_periph_clk_enable(ATMEL_ID_PIOC);
279 at91_seriald_hw_init();
280 taurus_request_gpio();
285 /* FIXME gpio code here need to handle through DM_GPIO */
286 #ifndef CONFIG_DM_SPI
287 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
289 return bus == 0 && cs == 0;
292 void spi_cs_activate(struct spi_slave *slave)
294 at91_set_gpio_value(TAURUS_SPI_CS_PIN, 0);
297 void spi_cs_deactivate(struct spi_slave *slave)
299 at91_set_gpio_value(TAURUS_SPI_CS_PIN, 1);
303 #ifdef CONFIG_USB_GADGET_AT91
304 #include <linux/usb/at91_udc.h>
306 void at91_udp_hw_init(void)
309 at91_pllb_clk_enable(get_pllb_init());
311 /* Enable UDPCK clock, MCK is enabled in at91_clock_init() */
312 at91_periph_clk_enable(ATMEL_ID_UDP);
314 at91_system_clk_enable(AT91SAM926x_PMC_UDP);
317 struct at91_udc_data board_udc_data = {
318 .baseaddr = ATMEL_BASE_UDP0,
324 /* adress of boot parameters */
325 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
327 taurus_request_gpio();
328 #ifdef CONFIG_CMD_NAND
329 taurus_nand_hw_init();
332 taurus_macb_hw_init();
334 at91_spi0_hw_init(TAURUS_SPI_MASK);
335 #ifdef CONFIG_USB_GADGET_AT91
337 at91_udc_probe(&board_udc_data);
345 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
346 CONFIG_SYS_SDRAM_SIZE);
350 #ifndef CONFIG_DM_ETH
351 int board_eth_init(bd_t *bis)
355 rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
361 #if !defined(CONFIG_SPL_BUILD)
362 #if defined(CONFIG_BOARD_AXM)
364 * Booting the Fallback Image.
366 * The function is used to provide and
367 * boot the image with the fallback
368 * parameters, incase if the faulty image
369 * in upgraded over the base firmware.
372 static int upgrade_failure_fallback(void)
374 char *partitionset_active = NULL;
376 char *rootfs_fallback = NULL;
382 partitionset_active = env_get("partitionset_active");
383 if (partitionset_active) {
384 if (partitionset_active[0] == 'A')
385 env_set("partitionset_active", "B");
387 env_set("partitionset_active", "A");
389 printf("partitionset_active missing.\n");
393 rootfs = env_get("rootfs");
394 rootfs_fallback = env_get("rootfs_fallback");
395 env_set("rootfs", rootfs_fallback);
396 env_set("rootfs_fallback", rootfs);
398 kern_size = env_get("kernel_size");
399 kern_size_fb = env_get("kernel_size_fallback");
400 env_set("kernel_size", kern_size_fb);
401 env_set("kernel_size_fallback", kern_size);
403 kern_off = env_get("kernel_Off");
404 kern_off_fb = env_get("kernel_Off_fallback");
405 env_set("kernel_Off", kern_off_fb);
406 env_set("kernel_Off_fallback", kern_off);
408 env_set("bootargs", '\0');
409 env_set("upgrade_available", '\0');
410 env_set("boot_retries", '\0');
416 static int do_upgrade_available(cmd_tbl_t *cmdtp, int flag, int argc,
419 unsigned long upgrade_available = 0;
420 unsigned long boot_retry = 0;
423 upgrade_available = simple_strtoul(env_get("upgrade_available"), NULL,
425 if (upgrade_available) {
426 boot_retry = simple_strtoul(env_get("boot_retries"), NULL, 10);
428 sprintf(boot_buf, "%lx", boot_retry);
429 env_set("boot_retries", boot_buf);
433 * Here the boot_retries count is checked, and if the
434 * count becomes greater than 2 switch back to the
435 * fallback, and reset the board.
438 if (boot_retry > 2) {
439 if (upgrade_failure_fallback() == 0)
440 do_reset(NULL, 0, 0, NULL);
448 upgrade_available, 1, 1, do_upgrade_available,
449 "check Siemens update",