[coreboot-gerrit] Change in coreboot[master]: riscv: update src/arch/riscv/bootblock.S
Xiang Wang (Code Review)
gerrit at coreboot.org
Thu Jul 19 11:35:57 CEST 2018
Xiang Wang has uploaded this change for review. ( https://review.coreboot.org/27545
Change subject: riscv: update src/arch/riscv/bootblock.S
......................................................................
riscv: update src/arch/riscv/bootblock.S
Save the FDT pointer to memory. Make mscratch vacate for exception context switching.
Change-Id: I24554528969e36c9e98c0ebd733e002e215a52e5
Signed-off-by: Xiang Wang <wxjstz at 126.com>
---
M src/arch/riscv/bootblock.S
1 file changed, 6 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/45/27545/1
diff --git a/src/arch/riscv/bootblock.S b/src/arch/riscv/bootblock.S
index 81a4455..f92ed4b 100644
--- a/src/arch/riscv/bootblock.S
+++ b/src/arch/riscv/bootblock.S
@@ -37,6 +37,12 @@
# initialize cache as ram
call cache_as_ram
+ # Save the FDT pointer to memory.
+ # Make mscratch vacate for exception context switching.
+ csrrw a1, mscratch, zero
+ la t0, rom_fdt
+ sd a1, 0(t0)
+
# initialize stack point for each hart
# and the stack must be page-aligned.
# 0xDEADBEEF used to check stack overflow
--
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I24554528969e36c9e98c0ebd733e002e215a52e5
Gerrit-Change-Number: 27545
Gerrit-PatchSet: 1
Gerrit-Owner: Xiang Wang <wxjstz at 126.com>
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