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| author | Hannes Petermaier <oe5hpm@oevsv.at> | 2015-02-03 13:22:43 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-03-05 20:13:20 -0500 |
| commit | 8db622cdd44ae5173a145a35c331cccfdbfeda5d (patch) | |
| tree | f89317345f202af82314d0d8cddca80dc38dd63b /board/BuR | |
| parent | a9642925a126b6a0be1e205c8da60883114a0f3d (diff) | |
| download | u-boot-imx-8db622cdd44ae5173a145a35c331cccfdbfeda5d.zip u-boot-imx-8db622cdd44ae5173a145a35c331cccfdbfeda5d.tar.gz u-boot-imx-8db622cdd44ae5173a145a35c331cccfdbfeda5d.tar.bz2 | |
board/BuR/kwb: Support modify bootcmd through reset-controller
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>
Diffstat (limited to 'board/BuR')
| -rw-r--r-- | board/BuR/kwb/board.c | 30 |
1 files 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); |