mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
|
|
* Broadcom specific AMBA
|
|
* ChipCommon NAND flash interface
|
|
*
|
|
* Licensed under the GNU/GPL. See COPYING for details.
|
|
*/
|
|
|
|
#include "bcma_private.h"
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/bcma/bcma.h>
|
|
|
|
struct platform_device bcma_nflash_dev = {
|
|
.name = "bcma_nflash",
|
|
.num_resources = 0,
|
|
};
|
|
|
|
/* Initialize NAND flash access */
|
|
int bcma_nflash_init(struct bcma_drv_cc *cc)
|
|
{
|
|
struct bcma_bus *bus = cc->core->bus;
|
|
|
|
if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4706 &&
|
|
cc->core->id.rev != 38) {
|
|
bcma_err(bus, "NAND flash on unsupported board!\n");
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
if (!(cc->capabilities & BCMA_CC_CAP_NFLASH)) {
|
|
bcma_err(bus, "NAND flash not present according to ChipCommon\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
cc->nflash.present = true;
|
|
if (cc->core->id.rev == 38 &&
|
|
(cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT))
|
|
cc->nflash.boot = true;
|
|
|
|
/* Prepare platform device, but don't register it yet. It's too early,
|
|
* malloc (required by device_private_init) is not available yet. */
|
|
bcma_nflash_dev.dev.platform_data = &cc->nflash;
|
|
|
|
return 0;
|
|
}
|