From 94bc9177cabdedd30795d236699b5df1c5c1d4a5 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Tue, 15 Aug 2017 22:38:27 -0700 Subject: [PATCH] x86: ich-spi: Remove spi_write_protect_region() This routine is not called anywhere. Signed-off-by: Bin Meng Reviewed-by: Stefan Roese --- drivers/spi/ich.c | 50 ----------------------------------------------- 1 file changed, 50 deletions(-) diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c index bf2e99b5cc..46dd9a873c 100644 --- a/drivers/spi/ich.c +++ b/drivers/spi/ich.c @@ -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); -- 2.30.2