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Diffstat (limited to 'board/ti/beagle/beagle.c')
-rw-r--r--board/ti/beagle/beagle.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
index c5d6679..d9b6f01 100644
--- a/board/ti/beagle/beagle.c
+++ b/board/ti/beagle/beagle.c
@@ -39,6 +39,27 @@
#include <asm/mach-types.h>
#include "beagle.h"
+#define TWL4030_I2C_BUS 0
+#define EXPANSION_EEPROM_I2C_BUS 1
+#define EXPANSION_EEPROM_I2C_ADDRESS 0x50
+
+#define TINCANTOOLS_ZIPPY 0x01000100
+#define TINCANTOOLS_ZIPPY2 0x02000100
+#define TINCANTOOLS_TRAINER 0x04000100
+#define TINCANTOOLS_SHOWDOG 0x03000100
+#define KBADC_BEAGLEFPGA 0x01000600
+
+#define BEAGLE_NO_EEPROM 0xffffffff
+
+static struct {
+ unsigned int device_vendor;
+ unsigned char revision;
+ unsigned char content;
+ char fab_revision[8];
+ char env_var[16];
+ char env_setting[64];
+} expansion_config;
+
/*
* Routine: board_init
* Description: Early hardware init.
@@ -95,6 +116,31 @@ int get_board_revision(void)
}
/*
+ * Routine: get_expansion_id
+ * Description: This function checks for expansion board by checking I2C
+ * bus 1 for the availability of an AT24C01B serial EEPROM.
+ * returns the device_vendor field from the EEPROM
+ */
+unsigned int get_expansion_id(void)
+{
+ i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
+
+ /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
+ if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
+ i2c_set_bus_num(TWL4030_I2C_BUS);
+ return BEAGLE_NO_EEPROM;
+ }
+
+ /* read configuration data */
+ i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
+ sizeof(expansion_config));
+
+ i2c_set_bus_num(TWL4030_I2C_BUS);
+
+ return expansion_config.device_vendor;
+}
+
+/*
* Routine: misc_init_r
* Description: Configure board specific parts
*/
@@ -141,6 +187,55 @@ int misc_init_r(void)
printf("Beagle unknown 0x%02x\n", get_board_revision());
}
+ switch (get_expansion_id()) {
+ case TINCANTOOLS_ZIPPY:
+ printf("Recognized Tincantools Zippy board (rev %d %s)\n",
+ expansion_config.revision,
+ expansion_config.fab_revision);
+ MUX_TINCANTOOLS_ZIPPY();
+ setenv("buddy", "zippy");
+ break;
+ case TINCANTOOLS_ZIPPY2:
+ printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
+ expansion_config.revision,
+ expansion_config.fab_revision);
+ MUX_TINCANTOOLS_ZIPPY();
+ setenv("buddy", "zippy2");
+ break;
+ case TINCANTOOLS_TRAINER:
+ printf("Recognized Tincantools Trainer board (rev %d %s)\n",
+ expansion_config.revision,
+ expansion_config.fab_revision);
+ MUX_TINCANTOOLS_ZIPPY();
+ MUX_TINCANTOOLS_TRAINER();
+ setenv("buddy", "trainer");
+ break;
+ case TINCANTOOLS_SHOWDOG:
+ printf("Recognized Tincantools Showdow board (rev %d %s)\n",
+ expansion_config.revision,
+ expansion_config.fab_revision);
+ /* Place holder for DSS2 definition for showdog lcd */
+ setenv("defaultdisplay", "showdoglcd");
+ setenv("buddy", "showdog");
+ break;
+ case KBADC_BEAGLEFPGA:
+ printf("Recognized KBADC Beagle FPGA board\n");
+ MUX_KBADC_BEAGLEFPGA();
+ setenv("buddy", "beaglefpga");
+ break;
+ case BEAGLE_NO_EEPROM:
+ printf("No EEPROM on expansion board\n");
+ setenv("buddy", "none");
+ break;
+ default:
+ printf("Unrecognized expansion board: %x\n",
+ expansion_config.device_vendor);
+ setenv("buddy", "unknown");
+ }
+
+ if (expansion_config.content == 1)
+ setenv(expansion_config.env_var, expansion_config.env_setting);
+
twl4030_power_init();
twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);