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_rstc.h>
22 #include <asm/arch/gpio.h>
23 #include <asm/arch/at91sam9_sdramc.h>
24 #include <asm/arch/clk.h>
25 #include <linux/mtd/nand.h>
26 #include <atmel_mci.h>
27 #include <asm/arch/at91_spi.h>
33 DECLARE_GLOBAL_DATA_PTR;
35 static void taurus_nand_hw_init(void)
37 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
38 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
41 /* Assign CS3 to NAND/SmartMedia Interface */
42 csa = readl(&matrix->ebicsa);
43 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
44 writel(csa, &matrix->ebicsa);
46 /* Configure SMC CS3 for NAND/SmartMedia */
47 writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
48 AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
50 writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(3) |
51 AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(3),
53 writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
55 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
56 AT91_SMC_MODE_EXNW_DISABLE |
58 AT91_SMC_MODE_TDF_CYCLE(3),
61 /* Configure RDY/BSY */
62 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
64 /* Enable NandFlash */
65 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
68 #if defined(CONFIG_SPL_BUILD)
71 #include <spi_flash.h>
73 void matrix_init(void)
75 struct at91_matrix *mat = (struct at91_matrix *)ATMEL_BASE_MATRIX;
77 writel((readl(&mat->scfg[3]) & (~AT91_MATRIX_SLOT_CYCLE))
78 | AT91_MATRIX_SLOT_CYCLE_(0x40),
82 #if defined(CONFIG_BOARD_AXM)
83 static int at91_is_recovery(void)
85 if ((at91_get_gpio_value(AT91_PIN_PA26) == 0) &&
86 (at91_get_gpio_value(AT91_PIN_PA27) == 0))
91 #elif defined(CONFIG_BOARD_TAURUS)
92 static int at91_is_recovery(void)
94 if (at91_get_gpio_value(AT91_PIN_PA31) == 0)
101 void spl_board_init(void)
103 taurus_nand_hw_init();
104 at91_spi0_hw_init(TAURUS_SPI_MASK);
106 #if defined(CONFIG_BOARD_AXM)
107 /* Configure LED PINs */
108 at91_set_gpio_output(AT91_PIN_PA6, 0);
109 at91_set_gpio_output(AT91_PIN_PA8, 0);
110 at91_set_gpio_output(AT91_PIN_PA9, 0);
111 at91_set_gpio_output(AT91_PIN_PA10, 0);
112 at91_set_gpio_output(AT91_PIN_PA11, 0);
113 at91_set_gpio_output(AT91_PIN_PA12, 0);
115 /* Configure recovery button PINs */
116 at91_set_gpio_input(AT91_PIN_PA26, 1);
117 at91_set_gpio_input(AT91_PIN_PA27, 1);
118 #elif defined(CONFIG_BOARD_TAURUS)
119 at91_set_gpio_input(AT91_PIN_PA31, 1);
122 /* check for recovery mode */
123 if (at91_is_recovery() == 1) {
124 struct spi_flash *flash;
126 puts("Recovery button pressed\n");
128 spl_nand_erase_one(0, 0);
129 flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
131 CONFIG_SF_DEFAULT_SPEED,
132 CONFIG_SF_DEFAULT_MODE);
136 puts("erase spi flash sector 0\n");
137 spi_flash_erase(flash, 0,
138 CONFIG_SYS_NAND_U_BOOT_SIZE);
143 #define SDRAM_BASE_CONF (AT91_SDRAMC_NR_13 | AT91_SDRAMC_CAS_3 \
144 |AT91_SDRAMC_NB_4 | AT91_SDRAMC_DBW_32 \
145 | AT91_SDRAMC_TWR_VAL(3) | AT91_SDRAMC_TRC_VAL(9) \
146 | AT91_SDRAMC_TRP_VAL(3) | AT91_SDRAMC_TRCD_VAL(3) \
147 | AT91_SDRAMC_TRAS_VAL(6) | AT91_SDRAMC_TXSR_VAL(10))
149 void sdramc_configure(unsigned int mask)
151 struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
152 struct sdramc_reg setting;
154 at91_sdram_hw_init();
155 setting.cr = SDRAM_BASE_CONF | mask;
156 setting.mdr = AT91_SDRAMC_MD_SDRAM;
157 setting.tr = (CONFIG_SYS_MASTER_CLOCK * 7) / 1000000;
159 writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC |
160 AT91_MATRIX_VDDIOMSEL_3_3V | AT91_MATRIX_EBI_IOSR_SEL,
163 sdramc_initialize(ATMEL_BASE_CS1, &setting);
168 unsigned int ram_size = 0;
170 /* Configure SDRAM for 128MB */
171 sdramc_configure(AT91_SDRAMC_NC_10);
173 /* Do memtest for 128MB */
174 ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
175 CONFIG_SYS_SDRAM_SIZE);
178 * If 32MB or 16MB should be supported check also for
179 * expected mirroring at A16 and A17
180 * To find mirror addresses depends how the collumns are connected
181 * at RAM (internaly or externaly)
182 * If the collumns are not in inverted order the mirror size effect
183 * behaves like normal SRAM with A0,A1,A2,etc. connected incremantal
186 /* Mirrors at A15 on ATMEL G20 SDRAM Controller with 64MB*/
187 if (ram_size == 0x800) {
189 sdramc_configure(AT91_SDRAMC_NC_9);
191 /* Size already initialized */
192 printf("\n\r 128MB");
198 static void siemens_phy_reset(void)
201 * we need to reset PHY for 200us
202 * because of bug in ATMEL G20 CPU (undefined initial state of GPIO)
204 if ((readl(AT91_ASM_RSTC_SR) & AT91_RSTC_RSTTYP) ==
205 AT91_RSTC_RSTTYP_GENERAL)
206 at91_set_gpio_value(AT91_PIN_PA25, 0); /* reset eth switch */
209 static void taurus_macb_hw_init(void)
211 /* Enable EMAC clock */
212 at91_periph_clk_enable(ATMEL_ID_EMAC0);
215 * Disable pull-up on:
216 * RXDV (PA17) => PHY normal mode (not Test mode)
217 * ERX0 (PA14) => PHY ADDR0
218 * ERX1 (PA15) => PHY ADDR1
219 * ERX2 (PA25) => PHY ADDR2
220 * ERX3 (PA26) => PHY ADDR3
221 * ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
223 * PHY has internal pull-down
225 at91_set_pio_pullup(AT91_PIO_PORTA, 14, 0);
226 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
227 at91_set_pio_pullup(AT91_PIO_PORTA, 17, 0);
228 at91_set_pio_pullup(AT91_PIO_PORTA, 25, 0);
229 at91_set_pio_pullup(AT91_PIO_PORTA, 26, 0);
230 at91_set_pio_pullup(AT91_PIO_PORTA, 28, 0);
236 at91_set_gpio_input(AT91_PIN_PA25, 1); /* ERST tri-state */
238 /* Re-enable pull-up */
239 at91_set_pio_pullup(AT91_PIO_PORTA, 14, 1);
240 at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
241 at91_set_pio_pullup(AT91_PIO_PORTA, 17, 1);
242 at91_set_pio_pullup(AT91_PIO_PORTA, 25, 1);
243 at91_set_pio_pullup(AT91_PIO_PORTA, 26, 1);
244 at91_set_pio_pullup(AT91_PIO_PORTA, 28, 1);
246 /* Initialize EMAC=MACB hardware */
251 #ifdef CONFIG_GENERIC_ATMEL_MCI
252 int board_mmc_init(bd_t *bd)
256 return atmel_mci_init((void *)ATMEL_BASE_MCI);
260 int board_early_init_f(void)
262 /* Enable clocks for all PIOs */
263 at91_periph_clk_enable(ATMEL_ID_PIOA);
264 at91_periph_clk_enable(ATMEL_ID_PIOB);
265 at91_periph_clk_enable(ATMEL_ID_PIOC);
267 at91_seriald_hw_init();
272 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
274 return bus == 0 && cs == 0;
277 void spi_cs_activate(struct spi_slave *slave)
279 at91_set_gpio_value(TAURUS_SPI_CS_PIN, 0);
282 void spi_cs_deactivate(struct spi_slave *slave)
284 at91_set_gpio_value(TAURUS_SPI_CS_PIN, 1);
287 #ifdef CONFIG_USB_GADGET_AT91
288 #include <linux/usb/at91_udc.h>
290 void at91_udp_hw_init(void)
293 at91_pllb_clk_enable(get_pllb_init());
295 /* Enable UDPCK clock, MCK is enabled in at91_clock_init() */
296 at91_periph_clk_enable(ATMEL_ID_UDP);
298 at91_system_clk_enable(AT91SAM926x_PMC_UDP);
301 struct at91_udc_data board_udc_data = {
302 .baseaddr = ATMEL_BASE_UDP0,
308 /* adress of boot parameters */
309 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
311 #ifdef CONFIG_CMD_NAND
312 taurus_nand_hw_init();
315 taurus_macb_hw_init();
317 at91_spi0_hw_init(TAURUS_SPI_MASK);
318 #ifdef CONFIG_USB_GADGET_AT91
320 at91_udc_probe(&board_udc_data);
328 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
329 CONFIG_SYS_SDRAM_SIZE);
333 int board_eth_init(bd_t *bis)
337 rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
342 #if !defined(CONFIG_SPL_BUILD)
343 #if defined(CONFIG_BOARD_AXM)
345 * Booting the Fallback Image.
347 * The function is used to provide and
348 * boot the image with the fallback
349 * parameters, incase if the faulty image
350 * in upgraded over the base firmware.
353 static int upgrade_failure_fallback(void)
355 char *partitionset_active = NULL;
357 char *rootfs_fallback = NULL;
363 partitionset_active = getenv("partitionset_active");
364 if (partitionset_active) {
365 if (partitionset_active[0] == 'A')
366 setenv("partitionset_active", "B");
368 setenv("partitionset_active", "A");
370 printf("partitionset_active missing.\n");
374 rootfs = getenv("rootfs");
375 rootfs_fallback = getenv("rootfs_fallback");
376 setenv("rootfs", rootfs_fallback);
377 setenv("rootfs_fallback", rootfs);
379 kern_size = getenv("kernel_size");
380 kern_size_fb = getenv("kernel_size_fallback");
381 setenv("kernel_size", kern_size_fb);
382 setenv("kernel_size_fallback", kern_size);
384 kern_off = getenv("kernel_Off");
385 kern_off_fb = getenv("kernel_Off_fallback");
386 setenv("kernel_Off", kern_off_fb);
387 setenv("kernel_Off_fallback", kern_off);
389 setenv("bootargs", '\0');
390 setenv("upgrade_available", '\0');
391 setenv("boot_retries", '\0');
397 static int do_upgrade_available(cmd_tbl_t *cmdtp, int flag, int argc,
400 unsigned long upgrade_available = 0;
401 unsigned long boot_retry = 0;
404 upgrade_available = simple_strtoul(getenv("upgrade_available"), NULL,
406 if (upgrade_available) {
407 boot_retry = simple_strtoul(getenv("boot_retries"), NULL, 10);
409 sprintf(boot_buf, "%lx", boot_retry);
410 setenv("boot_retries", boot_buf);
414 * Here the boot_retries count is checked, and if the
415 * count becomes greater than 2 switch back to the
416 * fallback, and reset the board.
419 if (boot_retry > 2) {
420 if (upgrade_failure_fallback() == 0)
421 do_reset(NULL, 0, 0, NULL);
429 upgrade_available, 1, 1, do_upgrade_available,
430 "check Siemens update",