summaryrefslogtreecommitdiff
path: root/Documentation/arch
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/arch')
-rw-r--r--Documentation/arch/riscv/index.md21
1 files changed, 10 insertions, 11 deletions
diff --git a/Documentation/arch/riscv/index.md b/Documentation/arch/riscv/index.md
index c2ecaef958..888651dba6 100644
--- a/Documentation/arch/riscv/index.md
+++ b/Documentation/arch/riscv/index.md
@@ -1,6 +1,6 @@
-# RISCV architecture documentation
+# RISC-V architecture documentation
-This section contains documentation about coreboot on RISCV architecture.
+This section contains documentation about coreboot on RISC-V architecture.
## Mode usage
All stages run in M mode.
@@ -17,7 +17,7 @@ will have been done. These payloads rely on the SBI and can not replace it.
## Stage handoff protocol
On entry to a stage or payload,
* all harts are running.
-* A0 is the hart ID
+* A0 is the hart ID.
* A1 is the pointer to the Flattened Device Tree (FDT).
## Additional payload handoff requirements
@@ -27,11 +27,12 @@ The location of cbmem should be placed in a node in the FDT.
Traps are delegated in the ramstage.
## SMP within a stage
-At the beginning of each stage, all harts save 0 are spinning in a loop on a semaphore.
-At the end of the stage harts 1..max are released by changing the
-semaphore.
+At the beginning of each stage, all harts save 0 are spinning in a loop on
+a semaphore. At the end of the stage harts 1..max are released by changing
+the semaphore.
-A possible way to do this is to have a pointer to a struct containing variables, e.g.
+A possible way to do this is to have a pointer to a struct containing
+variables, e.g.
```c
struct blocker {
@@ -39,9 +40,7 @@ struct blocker {
}
```
-The hart blocks until fn is non-null, and then calls it.
-If fn returns we will panic if possible, but behavior
-is largely undefined.
+The hart blocks until fn is non-null, and then calls it. If fn returns, we
+will panic if possible, but behavior is largely undefined.
Only hart 0 runs through most of the code in each stage.
-