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NAND : add boot media check

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Add boot media check , if boot from EMMC,no need to enable nand clock.
This commit is contained in:
Zhaoyifeng
2015-04-21 12:57:56 +08:00
parent 9279372228
commit 627fe3d23e
1 changed files with 14 additions and 1 deletions
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15
arch/arm/mach-rockchip/rknandbase.c
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@@ -208,6 +208,14 @@ int rknand_nandc_irq_init(int id,int mode,void * pfun)
}
EXPORT_SYMBOL(rknand_nandc_irq_init);
/*1:flash 2:emmc 4:sdcard0 8:sdcard1*/
static int rknand_boot_media = 2;
int rknand_get_boot_media(void)
{
return rknand_boot_media;
}
EXPORT_SYMBOL(rknand_get_boot_media);
static int rknand_probe(struct platform_device *pdev)
{
unsigned int id = 0;
@@ -241,7 +249,12 @@ static int rknand_probe(struct platform_device *pdev)
if(id == 0)
{
memcpy(nand_idb_data,membase+0x1000,0x800);
}
if (*(int *)(&nand_idb_data[0]) == 0x44535953) {
rknand_boot_media = *(int *)(&nand_idb_data[8]);
if (rknand_boot_media == 2) /*boot from emmc*/
return -1;
}
}
else if(id >= 2)
{
dev_err(&pdev->dev, "nandc id = %d error!\n",id);