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x86: ich-spi: Remove spi_write_protect_region()

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This routine is not called anywhere.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Bin Meng 2017-08-15 22:38:27 -07:00
parent 90ae53ce1a
commit 94bc9177ca
1 changed files with 0 additions and 50 deletions
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50
drivers/spi/ich.c
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@ -539,56 +539,6 @@ static int ich_spi_xfer(struct udevice *dev, unsigned int bitlen,
return 0;
}
/*
* This uses the SPI controller from the Intel Cougar Point and Panther Point
* PCH to write-protect portions of the SPI flash until reboot. The changes
* don't actually take effect until the HSFS[FLOCKDN] bit is set, but that's
* done elsewhere.
*/
int spi_write_protect_region(struct udevice *dev, uint32_t lower_limit,
uint32_t length, int hint)
{
struct udevice *bus = dev->parent;
struct ich_spi_priv *ctlr = dev_get_priv(bus);
uint32_t tmplong;
uint32_t upper_limit;
if (!ctlr->pr) {
printf("%s: operation not supported on this chipset\n",
__func__);
return -ENOSYS;
}
if (length == 0 ||
lower_limit > (0xFFFFFFFFUL - length) + 1 ||
hint < 0 || hint > 4) {
printf("%s(0x%x, 0x%x, %d): invalid args\n", __func__,
lower_limit, length, hint);
return -EPERM;
}
upper_limit = lower_limit + length - 1;
/*
* Determine bits to write, as follows:
* 31 Write-protection enable (includes erase operation)
* 30:29 reserved
* 28:16 Upper Limit (FLA address bits 24:12, with 11:0 == 0xfff)
* 15 Read-protection enable
* 14:13 reserved
* 12:0 Lower Limit (FLA address bits 24:12, with 11:0 == 0x000)
*/
tmplong = 0x80000000 |
((upper_limit & 0x01fff000) << 4) |
((lower_limit & 0x01fff000) >> 12);
printf("%s: writing 0x%08x to %p\n", __func__, tmplong,
&ctlr->pr[hint]);
ctlr->pr[hint] = tmplong;
return 0;
}
static int ich_spi_probe(struct udevice *dev)
{
struct ich_spi_platdata *plat = dev_get_platdata(dev);