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board/BuR/kwb: Support modify bootcmd through reset-controller

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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>
This commit is contained in:
Hannes Petermaier 2015-02-03 13:22:43 +01:00 committed by Tom Rini
parent a9642925a1
commit 8db622cdd4
1 changed files with 28 additions and 2 deletions
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30
board/BuR/kwb/board.c
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@ -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);