arm, at91: add axm extensions
add extensions for the axm board:
- power on LED on power up
- press both recovery buttons on power up to enter
recovery mode
- detect 64 MiB and 128 MiB ramsize
- PHY rest at reboot because of ATMEL bug
- use siemens update concept
- add axm default environment
- set CONFIG_SPL_MAX_SIZE to 15k
Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/board/siemens/taurus/taurus.c b/board/siemens/taurus/taurus.c
index 013dac2..781727e 100644
--- a/board/siemens/taurus/taurus.c
+++ b/board/siemens/taurus/taurus.c
@@ -12,6 +12,7 @@
* SPDX-License-Identifier: GPL-2.0+
*/
+#include <command.h>
#include <common.h>
#include <asm/io.h>
#include <asm/arch/at91sam9260_matrix.h>
@@ -79,16 +80,48 @@
&mat->scfg[3]);
}
+#if defined(CONFIG_BOARD_AXM)
+static int at91_is_recovery(void)
+{
+ if ((at91_get_gpio_value(AT91_PIN_PA26) == 0) &&
+ (at91_get_gpio_value(AT91_PIN_PA27) == 0))
+ return 1;
+
+ return 0;
+}
+#elif defined(CONFIG_BOARD_TAURUS)
+static int at91_is_recovery(void)
+{
+ if (at91_get_gpio_value(AT91_PIN_PA31) == 0)
+ return 1;
+
+ return 0;
+}
+#endif
+
void at91_spl_board_init(void)
{
taurus_nand_hw_init();
at91_spi0_hw_init(TAURUS_SPI_MASK);
- /* Configure recovery button PINs */
- at91_set_gpio_input(AT91_PIN_PA31, 1);
+#if defined(CONFIG_BOARD_AXM)
+ /* Configure LED PINs */
+ at91_set_gpio_output(AT91_PIN_PA6, 0);
+ at91_set_gpio_output(AT91_PIN_PA8, 0);
+ at91_set_gpio_output(AT91_PIN_PA9, 0);
+ at91_set_gpio_output(AT91_PIN_PA10, 0);
+ at91_set_gpio_output(AT91_PIN_PA11, 0);
+ at91_set_gpio_output(AT91_PIN_PA12, 0);
- /* check if button is pressed */
- if (at91_get_gpio_value(AT91_PIN_PA31) == 0) {
+ /* Configure recovery button PINs */
+ at91_set_gpio_input(AT91_PIN_PA26, 1);
+ at91_set_gpio_input(AT91_PIN_PA27, 1);
+#elif defined(CONFIG_BOARD_TAURUS)
+ at91_set_gpio_input(AT91_PIN_PA31, 1);
+#endif
+
+ /* check for recovery mode */
+ if (at91_is_recovery() == 1) {
struct spi_flash *flash;
debug("Recovery button pressed\n");
@@ -108,35 +141,72 @@
}
}
-void mem_init(void)
+#define SDRAM_BASE_CONF (AT91_SDRAMC_NR_13 | AT91_SDRAMC_CAS_3 \
+ |AT91_SDRAMC_NB_4 | AT91_SDRAMC_DBW_32 \
+ | AT91_SDRAMC_TWR_VAL(3) | AT91_SDRAMC_TRC_VAL(9) \
+ | AT91_SDRAMC_TRP_VAL(3) | AT91_SDRAMC_TRCD_VAL(3) \
+ | AT91_SDRAMC_TRAS_VAL(6) | AT91_SDRAMC_TXSR_VAL(10))
+
+void sdramc_configure(unsigned int mask)
{
struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
struct sdramc_reg setting;
at91_sdram_hw_init();
- setting.cr = (AT91_SDRAMC_NC_9 |
- AT91_SDRAMC_NR_13 |
- AT91_SDRAMC_CAS_3 |
- AT91_SDRAMC_NB_4 |
- AT91_SDRAMC_DBW_32 |
- AT91_SDRAMC_TWR_VAL(3) |
- AT91_SDRAMC_TRC_VAL(9) |
- AT91_SDRAMC_TRP_VAL(3) |
- AT91_SDRAMC_TRCD_VAL(3) |
- AT91_SDRAMC_TRAS_VAL(6) |
- AT91_SDRAMC_TXSR_VAL(10));
+ setting.cr = SDRAM_BASE_CONF | mask;
setting.mdr = AT91_SDRAMC_MD_SDRAM;
setting.tr = (CONFIG_SYS_MASTER_CLOCK * 7) / 1000000;
-
writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC |
AT91_MATRIX_VDDIOMSEL_3_3V | AT91_MATRIX_EBI_IOSR_SEL,
&ma->ebicsa);
+
sdramc_initialize(ATMEL_BASE_CS1, &setting);
}
+
+void mem_init(void)
+{
+ unsigned int ram_size = 0;
+
+ /* Configure SDRAM for 128MB */
+ sdramc_configure(AT91_SDRAMC_NC_10);
+
+ /* Do memtest for 128MB */
+ ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
+ CONFIG_SYS_SDRAM_SIZE);
+
+ /*
+ * If 32MB or 16MB should be supported check also for
+ * expected mirroring at A16 and A17
+ * To find mirror addresses depends how the collumns are connected
+ * at RAM (internaly or externaly)
+ * If the collumns are not in inverted order the mirror size effect
+ * behaves like normal SRAM with A0,A1,A2,etc. connected incremantal
+ */
+
+ /* Mirrors at A15 on ATMEL G20 SDRAM Controller with 64MB*/
+ if (ram_size == 0x800) {
+ printf("\n\r 64MB");
+ sdramc_configure(AT91_SDRAMC_NC_9);
+ } else {
+ /* Size already initialized */
+ printf("\n\r 128MB");
+ }
+}
#endif
#ifdef CONFIG_MACB
+static void siemens_phy_reset(void)
+{
+ /*
+ * we need to reset PHY for 200us
+ * because of bug in ATMEL G20 CPU (undefined initial state of GPIO)
+ */
+ if ((readl(AT91_ASM_RSTC_SR) & AT91_RSTC_RSTTYP) ==
+ AT91_RSTC_RSTTYP_GENERAL)
+ at91_set_gpio_value(AT91_PIN_PA25, 0); /* reset eth switch */
+}
+
static void taurus_macb_hw_init(void)
{
/* Enable EMAC clock */
@@ -160,6 +230,8 @@
at91_set_pio_pullup(AT91_PIO_PORTA, 26, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 28, 0);
+ siemens_phy_reset();
+
at91_phy_reset();
at91_set_gpio_input(AT91_PIN_PA25, 1); /* ERST tri-state */
@@ -244,3 +316,97 @@
#endif
return rc;
}
+
+#if !defined(CONFIG_SPL_BUILD)
+#if defined(CONFIG_BOARD_AXM)
+/*
+ * Booting the Fallback Image.
+ *
+ * The function is used to provide and
+ * boot the image with the fallback
+ * parameters, incase if the faulty image
+ * in upgraded over the base firmware.
+ *
+ */
+static int upgrade_failure_fallback(void)
+{
+ char *partitionset_active = NULL;
+ char *rootfs = NULL;
+ char *rootfs_fallback = NULL;
+ char *kern_off;
+ char *kern_off_fb;
+ char *kern_size;
+ char *kern_size_fb;
+
+ partitionset_active = getenv("partitionset_active");
+ if (partitionset_active) {
+ if (partitionset_active[0] == 'A')
+ setenv("partitionset_active", "B");
+ else
+ setenv("partitionset_active", "A");
+ } else {
+ printf("partitionset_active missing.\n");
+ return -ENOENT;
+ }
+
+ rootfs = getenv("rootfs");
+ rootfs_fallback = getenv("rootfs_fallback");
+ setenv("rootfs", rootfs_fallback);
+ setenv("rootfs_fallback", rootfs);
+
+ kern_size = getenv("kernel_size");
+ kern_size_fb = getenv("kernel_size_fallback");
+ setenv("kernel_size", kern_size_fb);
+ setenv("kernel_size_fallback", kern_size);
+
+ kern_off = getenv("kernel_Off");
+ kern_off_fb = getenv("kernel_Off_fallback");
+ setenv("kernel_Off", kern_off_fb);
+ setenv("kernel_Off_fallback", kern_off);
+
+ setenv("bootargs", '\0');
+ setenv("upgrade_available", '\0');
+ setenv("boot_retries", '\0');
+ saveenv();
+
+ return 0;
+}
+
+static int do_upgrade_available(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ unsigned long upgrade_available = 0;
+ unsigned long boot_retry = 0;
+ char boot_buf[10];
+
+ upgrade_available = simple_strtoul(getenv("upgrade_available"), NULL,
+ 10);
+ if (upgrade_available) {
+ boot_retry = simple_strtoul(getenv("boot_retries"), NULL, 10);
+ boot_retry++;
+ sprintf(boot_buf, "%lx", boot_retry);
+ setenv("boot_retries", boot_buf);
+ saveenv();
+
+ /*
+ * Here the boot_retries count is checked, and if the
+ * count becomes greater than 2 switch back to the
+ * fallback, and reset the board.
+ */
+
+ if (boot_retry > 2) {
+ if (upgrade_failure_fallback() == 0)
+ do_reset(NULL, 0, 0, NULL);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+U_BOOT_CMD(
+ upgrade_available, 1, 1, do_upgrade_available,
+ "check Siemens update",
+ "no parameters"
+);
+#endif
+#endif