diff options
| author | Philipp Hug <philipp@hug.cx> | 2018-12-01 18:17:18 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-12-07 11:37:53 +0000 |
| commit | 968a23d2e0afcf3ead23d3075aecc5c6e27211e4 (patch) | |
| tree | 224538a6d842bd87f15ea167c5b75b9a555a8570 | |
| parent | 6ee37ef59ddf5e7f005e0aa24541b190384ab87c (diff) | |
| download | coreboot-968a23d2e0afcf3ead23d3075aecc5c6e27211e4.tar.xz | |
riscv: fix non-SMP support
Use CONFIG_CPU_MAX which defaults to 1 instead of CONFIG_RISCV_HART_NUM.
The default value of CONFIG_RISCV_HART_NUM was 0 and cause a jump to address 0.
Add a die() call to fail gracefully.
Change-Id: I4e3aa09b787ae0f26a4aae375f4e5fcd745a0a1e
Signed-off-by: Philipp Hug <philipp@hug.cx>
Reviewed-on: https://review.coreboot.org/c/29993
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Xiang Wang <wxjstz@126.com>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
| -rw-r--r-- | src/arch/riscv/Kconfig | 3 | ||||
| -rw-r--r-- | src/arch/riscv/smp.c | 9 | ||||
| -rw-r--r-- | src/soc/sifive/fu540/Kconfig | 2 |
3 files changed, 7 insertions, 7 deletions
diff --git a/src/arch/riscv/Kconfig b/src/arch/riscv/Kconfig index ae83be855b..9fa43bc9f2 100644 --- a/src/arch/riscv/Kconfig +++ b/src/arch/riscv/Kconfig @@ -33,8 +33,5 @@ config RISCV_USE_ARCH_TIMER bool default n -config RISCV_HART_NUM - int - config RISCV_WORKING_HARTID int diff --git a/src/arch/riscv/smp.c b/src/arch/riscv/smp.c index 8d07d39ded..8942ec5b93 100644 --- a/src/arch/riscv/smp.c +++ b/src/arch/riscv/smp.c @@ -55,7 +55,7 @@ void smp_pause(int working_hartid) /* waiting for other Hart to enter the halt */ do { barrier(); - } while (SYNCB + 1 < CONFIG_RISCV_HART_NUM); + } while (SYNCB + 1 < CONFIG_MAX_CPUS); /* initialize for the next call */ SYNCA = 0; @@ -72,14 +72,17 @@ void smp_resume(void (*fn)(void *), void *arg) if (fn == NULL) die("must pass a non-null function pointer\n"); - for (int i = 0; i < CONFIG_RISCV_HART_NUM; i++) { + for (int i = 0; i < CONFIG_MAX_CPUS; i++) { OTHER_HLS(i)->entry.fn = fn; OTHER_HLS(i)->entry.arg = arg; } - for (int i = 0; i < CONFIG_RISCV_HART_NUM; i++) + for (int i = 0; i < CONFIG_MAX_CPUS; i++) if (i != hartid) set_msip(i, 1); + if (HLS()->entry.fn == NULL) + die("entry fn not set\n"); + HLS()->entry.fn(HLS()->entry.arg); } diff --git a/src/soc/sifive/fu540/Kconfig b/src/soc/sifive/fu540/Kconfig index 72305d67a9..795f51b4d6 100644 --- a/src/soc/sifive/fu540/Kconfig +++ b/src/soc/sifive/fu540/Kconfig @@ -39,7 +39,7 @@ config RISCV_CODEMODEL string default "medany" -config RISCV_HART_NUM +config MAX_CPUS int default 5 |