arm, at91: add axm extensions
authorHeiko Schocher <hs@denx.de>
Fri, 21 Aug 2015 16:53:46 +0000 (18:53 +0200)
committerAndreas Bießmann <andreas.devel@googlemail.com>
Fri, 11 Sep 2015 07:35:38 +0000 (09:35 +0200)
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>
board/siemens/taurus/taurus.c
include/configs/taurus.h

index 013dac2..781727e 100644 (file)
@@ -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 @@ void matrix_init(void)
                        &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);
 
+#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);
+
        /* 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 if button is pressed */
-       if (at91_get_gpio_value(AT91_PIN_PA31) == 0) {
+       /* check for recovery mode */
+       if (at91_is_recovery() == 1) {
                struct spi_flash *flash;
 
                debug("Recovery button pressed\n");
@@ -108,35 +141,72 @@ void at91_spl_board_init(void)
        }
 }
 
-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 @@ static void taurus_macb_hw_init(void)
        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 @@ int board_eth_init(bd_t *bis)
 #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
index 2c9f5da..fb7c575 100644 (file)
@@ -20,6 +20,7 @@
  * In this case SoC is defined in boards.cfg.
  */
 #include <asm/hardware.h>
+#include <linux/sizes.h>
 
 #define CONFIG_SYS_GENERIC_BOARD
 
 #define CONFIG_ENV_OFFSET_REDUND       0x180000
 #define CONFIG_ENV_SIZE                0x20000         /* 1 sector = 128 kB */
 #define CONFIG_BOOTCOMMAND     "nand read 0x22000000 0x200000 0x300000; bootm"
-#define CONFIG_BOOTARGS                                                        \
+
+#if defined(CONFIG_BOARD_TAURUS)
+#define        CONFIG_BOOTARGS_TAURUS                                          \
        "console=ttyS0,115200 earlyprintk "                             \
        "mtdparts=atmel_nand:256k(bootstrap)ro,512k(uboot)ro,"          \
        "256k(env),256k(env_redundant),256k(spare),"                    \
        "512k(dtb),6M(kernel)ro,-(rootfs) "                             \
        "root=/dev/mtdblock7 rw rootfstype=jffs2"
+#endif
+
+#if defined(CONFIG_BOARD_AXM)
+#define CONFIG_BOOTARGS_AXM                                            \
+       "\0"    \
+       "addip=setenv bootargs ${bootargs} ip=${ipaddr}:${serverip}:"   \
+       "${gatewayip}:${netmask}:${hostname}:${netdev}::off\0"          \
+       "addtest=setenv bootargs ${bootargs} loglevel=4 test\0"         \
+       "baudrate=115200\0"                                             \
+       "boot_file=setenv bootfile /${project_dir}/kernel/uImage\0"     \
+       "boot_retries=0\0"                                              \
+       "bootcmd=run flash_self\0"                                      \
+       "bootdelay=3\0"                                                 \
+       "ethact=macb0\0"                                                \
+       "flash_nfs=run nand_kernel;run nfsargs;run addip;upgrade_available;"\
+       "bootm ${kernel_ram};reset\0"                                   \
+       "flash_self=run nand_kernel;run setbootargs;upgrade_available;" \
+       "bootm ${kernel_ram};reset\0"                                   \
+       "flash_self_test=run nand_kernel;run setbootargs addtest; "     \
+       "upgrade_available;bootm ${kernel_ram};reset\0"                 \
+       "hostname=systemone\0"                                          \
+       "kernel_Off=0x00200000\0"                                       \
+       "kernel_Off_fallback=0x03800000\0"                              \
+       "kernel_ram=0x21500000\0"                                       \
+       "kernel_size=0x00400000\0"                                      \
+       "kernel_size_fallback=0x00400000\0"                             \
+       "loads_echo=1\0"                                                \
+       "nand_kernel=nand read.e ${kernel_ram} ${kernel_Off} "          \
+               "${kernel_size}\0"                                      \
+       "net_nfs=run boot_file;tftp ${kernel_ram} ${bootfile};"         \
+       "run nfsargs;run addip;upgrade_available;bootm "                \
+               "${kernel_ram};reset\0"                                 \
+       "netdev=eth0\0"                                                 \
+       "nfsargs=run root_path;setenv bootargs ${bootargs} "            \
+       "root=/dev/nfs rw nfsroot=${serverip}:${rootpath} "             \
+       "at91sam9_wdt.wdt_timeout=16\0"                                 \
+       "partitionset_active=A\0"                                       \
+       "preboot=echo;echo Type 'run flash_self' to use kernel and root "\
+       "filesystem on memory;echo Type 'run flash_nfs' to use kernel " \
+       "from memory and root filesystem over NFS;echo Type 'run net_nfs' "\
+       "to get Kernel over TFTP and mount root filesystem over NFS;echo\0"\
+       "project_dir=systemone\0"                                       \
+       "root_path=setenv rootpath /home/projects/${project_dir}/rootfs\0"\
+       "rootfs=/dev/mtdblock5\0"                                       \
+       "rootfs_fallback=/dev/mtdblock7\0"                              \
+       "setbootargs=setenv bootargs ${bootargs} console=ttyMTD,mtdoops "\
+               "root=${rootfs} rootfstype=jffs2 panic=7 "              \
+               "at91sam9_wdt.wdt_timeout=16\0"                         \
+       "stderr=serial\0"                                               \
+       "stdin=serial\0"                                                \
+       "stdout=serial\0"                                               \
+       "upgrade_available=0\0"
+#endif
+
+#if defined(CONFIG_BOARD_TAURUS)
+#define CONFIG_BOOTARGS                CONFIG_BOOTARGS_TAURUS
+#endif
+
+#if defined(CONFIG_BOARD_AXM)
+#define CONFIG_BOOTARGS                CONFIG_BOOTARGS_AXM
+#endif
 
 #define CONFIG_SYS_CBSIZE              256
 #define CONFIG_SYS_MAXARGS             16
 /* Defines for SPL */
 #define CONFIG_SPL_FRAMEWORK
 #define CONFIG_SPL_TEXT_BASE           0x0
-#define CONFIG_SPL_MAX_SIZE            (14 * 1024)
-#define CONFIG_SPL_STACK               (16 * 1024)
+#define CONFIG_SPL_MAX_SIZE            (31 * SZ_512)
+#define        CONFIG_SPL_STACK                (ATMEL_BASE_SRAM1 + SZ_16K)
 #define CONFIG_SYS_SPL_MALLOC_START     (CONFIG_SYS_TEXT_BASE - \
                                        CONFIG_SYS_MALLOC_LEN)
 #define CONFIG_SYS_SPL_MALLOC_SIZE      CONFIG_SYS_MALLOC_LEN
 #define CONFIG_SYS_MCKR                        0x1300
 #define CONFIG_SYS_MCKR_CSS            (0x02 | CONFIG_SYS_MCKR)
 #define CONFIG_SYS_AT91_PLLB           0x10193F05
+
 #endif