For some cases it is necessary to modify temporaly the bootcommand. This can be done by writing into the Scratchregister a specific value:
* 0xCC - modify bootcmd "run netboot" * 0xCD - modify bootcmd "run netscript" * 0xCE - modify bootcmd "run mmcboot"
the environment in flash is NOT overwritten.
Signed-off-by: Hannes Petermaier oe5hpm@oevsv.at --- board/BuR/kwb/board.c | 30 ++++++++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-)
diff --git a/board/BuR/kwb/board.c b/board/BuR/kwb/board.c index 455f472..892311e 100644 --- a/board/BuR/kwb/board.c +++ b/board/BuR/kwb/board.c @@ -169,10 +169,18 @@ int board_late_init(void) const unsigned int toff = 1000; unsigned int cnt = 3; unsigned short buf = 0xAAAA; + unsigned char scratchreg = 0; unsigned int oldspeed;
- tps65217_reg_write(TPS65217_PROT_LEVEL_NONE, - TPS65217_WLEDCTRL2, 0x32, 0xFF); /* 50% dimlevel */ + /* try to read out some boot-instruction from resetcontroller */ + oldspeed = i2c_get_bus_speed(); + if (i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC) >= 0) { + i2c_read(RSTCTRL_ADDR, RSTCTRL_SCRATCHREG, 1, + &scratchreg, sizeof(scratchreg)); + i2c_set_bus_speed(oldspeed); + } else { + puts("ERROR: i2c_set_bus_speed failed! (scratchregister)\n"); + }
if (gpio_get_value(ESC_KEY)) { do { @@ -223,6 +231,24 @@ int board_late_init(void) break; } } while (cnt); + } else if (scratchreg == 0xCC) { + lcd_position_cursor(1, 8); + lcd_puts( + "starting vxworks from network ... "); + setenv("bootcmd", "run netboot"); + cnt = 4; + } else if (scratchreg == 0xCD) { + lcd_position_cursor(1, 8); + lcd_puts( + "starting script from network ... "); + setenv("bootcmd", "run netscript"); + cnt = 4; + } else if (scratchreg == 0xCE) { + lcd_position_cursor(1, 8); + lcd_puts( + "starting AR from eMMC ... "); + setenv("bootcmd", "run mmcboot"); + cnt = 4; }
lcd_position_cursor(1, 8);