[coreboot-gerrit] Change in coreboot[master]: drivers/spi: [WIP] Implement write protect operation

[Rizwan Qureshi (Code Review)]

Rizwan Qureshi has uploaded this change for review. ( https://review.coreboot.org/28725

Change subject: drivers/spi: [WIP] Implement write protect operation
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drivers/spi: [WIP] Implement write protect operation

Implement a write protect operation which can be used
as part of a region_device_ops.
This operation will protect the region using the SPI FPR.

Change-Id: I87cef73852ea671ec80741af78844d32c0ed5d3c
Signed-off-by: Rizwan Qureshi 
---
M src/drivers/spi/boot_device_rw_nommap.c
1 file changed, 6 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/25/28725/1

diff --git a/src/drivers/spi/boot_device_rw_nommap.c b/src/drivers/spi/boot_device_rw_nommap.c
index 64d81c5..aadaf4e 100644
--- a/src/drivers/spi/boot_device_rw_nommap.c
+++ b/src/drivers/spi/boot_device_rw_nommap.c
@@ -50,6 +50,11 @@
    return size;
 }

+static int spi_protect(const struct region *r)
+{
+	return spi_flash_ctrlr_protect_region(boot_device_spi_flash(), r);
+}
+
 static ssize_t spi_eraseat(const struct region_device *rd,
    			size_t offset, size_t size)
 {
@@ -68,6 +73,7 @@
    .readat = spi_readat,
    .writeat = spi_writeat,
    .eraseat = spi_eraseat,
+	.protect = spi_protect,
 };

static const struct region_device spi_rw =