Hi all.
I am use wince and i.mx287.
in eboot i have some strange code:
....
// This will depend on the boot mode
g_bNandBootloader = TRUE;
g_bSDHCBootloader = FALSE;
// check for SDBoot
if ( ((*(PBYTE)((DWORD)pbOCRAM + OCRAM_BOOT_MODE_OFFSET)) & BOOT_MODE_MASK) == BOOT_MODE_SDMMC)
{
g_bSPIBootloader = FALSE;
g_bNandBootloader = FALSE;
g_bSDHCBootloader = TRUE;
RETAILMSG(1, (L"INFO: Booted from SD/MMC\r\n"));
}
// check for SPIBoot
if ( ((*(PBYTE)((DWORD)pbOCRAM + OCRAM_BOOT_MODE_OFFSET)) & BOOT_MODE_MASK) == BOOT_MODE_SPI)
{
g_bNandBootloader = FALSE;
g_bSDHCBootloader = FALSE;
g_bSPIBootloader = TRUE;
RETAILMSG(1, (L"INFO: Booted from SPI Flash\r\n"));
}
...
OCRAM_BOOT_MODE_OFFSET and others defined as
#ifndef BSP_SI_VER_TO1_0
#define OCRAM_BOOT_MODE_OFFSET 0x19BF0
#else
#define OCRAM_BOOT_MODE_OFFSET 0x1A7F0
#endif
#define BOOT_MODE_MASK 0xF
#define BOOT_MODE_SDMMC 0x9
#define BOOT_MODE_SPI 0x2
on all my boards i select boot mode by pullup\pulldown LCD_Dx pins
on all my boards i select BOOT MODE - NAND 3.3V (LCD_D4=0, LCD_D3=0, LCD_D2=1, LCD_D1=0, LCD_D0=0)
But on some board i got this messages "INFO: Booted from SPI Flash".
Why?
i am add debug in eboot code like this:
{
unsigned value;
RETAILMSG(1,(TEXT("at address(%x) data = %x\r\n"),((unsigned)((DWORD)pbOCRAM + OCRAM_BOOT_MODE_OFFSET)) ,*((PBYTE)((DWORD)pbOCRAM + OCRAM_BOOT_MODE_OFFSET)) ));
DDKIomuxSetPinMux(DDK_IOMUX_LCD_D0, DDK_IOMUX_MODE_GPIO);
DDKIomuxSetPinMux(DDK_IOMUX_LCD_D1, DDK_IOMUX_MODE_GPIO);
DDKIomuxSetPinMux(DDK_IOMUX_LCD_D2, DDK_IOMUX_MODE_GPIO);
DDKIomuxSetPinMux(DDK_IOMUX_LCD_D3, DDK_IOMUX_MODE_GPIO);
DDKIomuxSetPinMux(DDK_IOMUX_LCD_D4, DDK_IOMUX_MODE_GPIO);
DDKIomuxSetPinMux(DDK_IOMUX_LCD_D5, DDK_IOMUX_MODE_GPIO);
DDKIomuxSetPinMux(DDK_IOMUX_LCD_D6, DDK_IOMUX_MODE_GPIO);
DDKGpioReadDataPin(DDK_IOMUX_LCD_D0,&value);
RETAILMSG(1,(TEXT("DDK_IOMUX_LCD_D0 = : %x\r\n"), value));
DDKGpioReadDataPin(DDK_IOMUX_LCD_D1,&value);
RETAILMSG(1,(TEXT("DDK_IOMUX_LCD_D1 = : %x\r\n"), value));
DDKGpioReadDataPin(DDK_IOMUX_LCD_D2,&value);
RETAILMSG(1,(TEXT("DDK_IOMUX_LCD_D2 = : %x\r\n"), value));
DDKGpioReadDataPin(DDK_IOMUX_LCD_D3,&value);
RETAILMSG(1,(TEXT("DDK_IOMUX_LCD_D3 = : %x\r\n"), value));
DDKGpioReadDataPin(DDK_IOMUX_LCD_D4,&value);
RETAILMSG(1,(TEXT("DDK_IOMUX_LCD_D4 = : %x\r\n"), value));
DDKGpioReadDataPin(DDK_IOMUX_LCD_D5,&value);
RETAILMSG(1,(TEXT("DDK_IOMUX_LCD_D5 = : %x\r\n"), value));
DDKGpioReadDataPin(DDK_IOMUX_LCD_D6,&value);
RETAILMSG(1,(TEXT("DDK_IOMUX_LCD_D6 = : %x\r\n"), value));
}
and i take this in terminal:
at address(a801a7f0) data = c2
DDK_IOMUX_LCD_D0 = : 0
DDK_IOMUX_LCD_D1 = : 0
DDK_IOMUX_LCD_D2 = : 1
DDK_IOMUX_LCD_D3 = : 0
DDK_IOMUX_LCD_D4 = : 0
DDK_IOMUX_LCD_D5 = : 0
DDK_IOMUX_LCD_D6 = : 0
So my question: what is this OCRAM_BOOT_MODE_OFFSET and why eboot use this? may be this is code wrong?
