[coreboot-gerrit] Change in coreboot[master]: common/block/fast_spi: Add function to DLOCK PR registers
Barnali Sarkar (Code Review)
gerrit at coreboot.org
Thu Aug 17 08:33:05 CEST 2017
Barnali Sarkar has uploaded this change for review. ( https://review.coreboot.org/21063
Change subject: common/block/fast_spi: Add function to DLOCK PR registers
......................................................................
common/block/fast_spi: Add function to DLOCK PR registers
Add a function in FAST_SPI library to discrete lock the PR
registers 0 to 4.
BUG=none
BRANCH=none
TEST=Build and boot poppy
Change-Id: I46e1948315ea9489932efdf7d60d6d78ab3948a6
Signed-off-by: Barnali Sarkar <barnali.sarkar at intel.com>
---
M src/soc/intel/common/block/fast_spi/fast_spi.c
M src/soc/intel/common/block/fast_spi/fast_spi_def.h
M src/soc/intel/common/block/include/intelblocks/fast_spi.h
3 files changed, 30 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/63/21063/1
diff --git a/src/soc/intel/common/block/fast_spi/fast_spi.c b/src/soc/intel/common/block/fast_spi/fast_spi.c
index fe0217a..dbb25d7 100644
--- a/src/soc/intel/common/block/fast_spi/fast_spi.c
+++ b/src/soc/intel/common/block/fast_spi/fast_spi.c
@@ -149,6 +149,23 @@
write16(spibar + SPIBAR_HSFSTS_CTL, hsfs);
}
+/*.
+ * Set FAST_SPIBAR + DLOCK (0x0C) register bits to discrete lock the
+ * FAST_SPI Protected Range (PR) registers.
+ */
+void fast_spi_pr_dlock(void)
+{
+ void *spibar = fast_spi_get_bar();
+ uint32_t dlock;
+
+ dlock = read32(spibar + SPIBAR_DLOCK);
+ dlock |= (SPIBAR_DLOCK_PR0LOCKDN | SPIBAR_DLOCK_PR1LOCKDN
+ | SPIBAR_DLOCK_PR2LOCKDN | SPIBAR_DLOCK_PR3LOCKDN
+ | SPIBAR_DLOCK_PR4LOCKDN);
+
+ write32(spibar + SPIBAR_DLOCK, dlock);
+}
+
/*
* Set FAST_SPIBAR Soft Reset Data Register value.
*/
diff --git a/src/soc/intel/common/block/fast_spi/fast_spi_def.h b/src/soc/intel/common/block/fast_spi/fast_spi_def.h
index 8e06df2..5b83265 100644
--- a/src/soc/intel/common/block/fast_spi/fast_spi_def.h
+++ b/src/soc/intel/common/block/fast_spi/fast_spi_def.h
@@ -34,6 +34,7 @@
#define SPIBAR_BFPREG 0x00
#define SPIBAR_HSFSTS_CTL 0x04
#define SPIBAR_FADDR 0x08
+#define SPIBAR_DLOCK 0x0c
#define SPIBAR_FDATA(n) (0x10 + ((n) & 0xf) * 4)
#define SPIBAR_FPR_BASE 0x84
#define SPIBAR_FPR(n) 0x84 + (4 * n))
@@ -87,6 +88,13 @@
/* Bit definitions for FADDR (0x08) register */
#define SPIBAR_FADDR_MASK 0x7FFFFFF
+/* Bit definitions for DLOCK (0x0C) register */
+#define SPIBAR_DLOCK_PR0LOCKDN (1 << 8)
+#define SPIBAR_DLOCK_PR1LOCKDN (1 << 9)
+#define SPIBAR_DLOCK_PR2LOCKDN (1 << 10)
+#define SPIBAR_DLOCK_PR3LOCKDN (1 << 11)
+#define SPIBAR_DLOCK_PR4LOCKDN (1 << 12)
+
/* Maximum bytes of data that can fit in FDATAn (0x10) registers */
#define SPIBAR_FDATA_FIFO_SIZE 0x40
diff --git a/src/soc/intel/common/block/include/intelblocks/fast_spi.h b/src/soc/intel/common/block/include/intelblocks/fast_spi.h
index b399e4d..e93c546 100644
--- a/src/soc/intel/common/block/include/intelblocks/fast_spi.h
+++ b/src/soc/intel/common/block/include/intelblocks/fast_spi.h
@@ -48,6 +48,11 @@
* Lock FAST_SPIBAR.
*/
void fast_spi_lock_bar(void);
+/*.
+ * Set FAST_SPIBAR + DLOCK (0x0C) register bits to discrete lock the
+ * FAST_SPI Protected Range (PR) registers.
+ */
+void fast_spi_pr_dlock(void);
/*
* Set FAST_SPIBAR Soft Reset Data Register value.
*/
--
To view, visit https://review.coreboot.org/21063
To unsubscribe, visit https://review.coreboot.org/settings
Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I46e1948315ea9489932efdf7d60d6d78ab3948a6
Gerrit-Change-Number: 21063
Gerrit-PatchSet: 1
Gerrit-Owner: Barnali Sarkar <barnali.sarkar at intel.com>
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