diff options
author | Andreas Bießmann <andreas.biessmann@corscience.de> | 2013-09-06 15:04:53 +0200 |
---|---|---|
committer | Tom Rini <trini@ti.com> | 2013-11-01 15:55:59 -0400 |
commit | 890880583d84607e36b52a785a96b167728bbf73 (patch) | |
tree | a59cd0f955932a68cd56b3285dbd77729d750bb1 /board/corscience/tricorder | |
parent | 459f1da88b42e9a795e51c73fcd55fd339fc594b (diff) |
tricorder: panic() on unknown board
Also hang() the board on panic().
Signed-off-by: Andreas Bießmann <andreas.biessmann@corscience.de>
Diffstat (limited to 'board/corscience/tricorder')
-rw-r--r-- | board/corscience/tricorder/tricorder.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/board/corscience/tricorder/tricorder.c b/board/corscience/tricorder/tricorder.c index c7099e5e3a0..b8129168b9f 100644 --- a/board/corscience/tricorder/tricorder.c +++ b/board/corscience/tricorder/tricorder.c @@ -13,11 +13,13 @@ #include <common.h> #include <twl4030.h> #include <asm/io.h> +#include <asm/gpio.h> #include <asm/arch/mmc_host_def.h> #include <asm/arch/mux.h> #include <asm/arch/sys_proto.h> #include <asm/arch/mem.h> #include "tricorder.h" +#include "tricorder-eeprom.h" DECLARE_GLOBAL_DATA_PTR; @@ -34,12 +36,87 @@ int board_init(void) return 0; } +/** + * get_eeprom - read the eeprom + * + * @eeprom - pointer to a eeprom struct to fill + * + * This function will panic() on wrong EEPROM content + */ +static void get_eeprom(struct tricorder_eeprom *eeprom) +{ + int ret; + + if (!eeprom) + panic("No eeprom given!\n"); + + ret = gpio_request(7, "BMS"); + if (ret) + panic("gpio: requesting BMS pin failed\n"); + + ret = gpio_direction_input(7); + if (ret) + panic("gpio: set BMS as input failed\n"); + + ret = gpio_get_value(7); + if (ret < 0) + panic("gpio: get BMS pin state failed\n"); + + gpio_free(7); + + if (ret == 0) { + /* BMS is _not_ set, do the EEPROM check */ + ret = tricorder_get_eeprom(0x51, eeprom); + if (!ret) { + if (strncmp(eeprom->board_name, "CS10411", 7) != 0) + panic("Wrong board name '%.*s'\n", + sizeof(eeprom->board_name), + eeprom->board_name); + if (eeprom->board_version[0] < 'D') + panic("Wrong board version '%.*s'\n", + sizeof(eeprom->board_version), + eeprom->board_version); + } else { + panic("Could not get board revision\n"); + } + } +} + +/** + * print_hwversion - print out a HW version string + * + * @eeprom - pointer to the eeprom + */ +static void print_hwversion(struct tricorder_eeprom *eeprom) +{ + size_t len; + if (!eeprom) + panic("No eeprom given!"); + + printf("Board %.*s:%.*s serial %.*s", + sizeof(eeprom->board_name), eeprom->board_name, + sizeof(eeprom->board_version), eeprom->board_version, + sizeof(eeprom->board_serial), eeprom->board_serial); + + len = strnlen(eeprom->interface_version, + sizeof(eeprom->interface_version)); + if (len > 0) + printf(" HW interface version %.*s", + sizeof(eeprom->interface_version), + eeprom->interface_version); + puts("\n"); +} + /* * Routine: misc_init_r * Description: Configure board specific parts */ int misc_init_r(void) { + struct tricorder_eeprom eeprom; + get_eeprom(&eeprom); + print_hwversion(&eeprom); + twl4030_power_init(); #ifdef CONFIG_TWL4030_LED twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); |