diff options
| author | Atish Patra <atish.patra@wdc.com> | 2019-01-24 14:48:45 -0800 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2019-01-29 07:17:14 +0530 |
| commit | d70f8aab45d1e449b3b9be26e050b20ed76e12e9 (patch) | |
| tree | 2d8067b4e3723f36627bbc482a006490a5b83928 | |
| parent | bd98d772983df829b78b7ba16bc2dce559c93fbc (diff) | |
platform: fu540: Provide a compile time option selective hart booting.
Currently, only hart 1 is enabled for fu540 platform to support U-boot.
Introduce a compile time FU540_ENABLED_HART_MASK option so that specific
harts can be selected for booting. As fu540 is a multicore, we should
boot all cores by default except hart 0.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
| -rw-r--r-- | platform/sifive/fu540/objects.mk | 3 | ||||
| -rw-r--r-- | platform/sifive/fu540/platform.c | 12 |
2 files changed, 13 insertions, 2 deletions
diff --git a/platform/sifive/fu540/objects.mk b/platform/sifive/fu540/objects.mk index e0d0585..f09a305 100644 --- a/platform/sifive/fu540/objects.mk +++ b/platform/sifive/fu540/objects.mk @@ -8,3 +8,6 @@ # platform-objs-y += platform.o +ifdef FU540_ENABLED_HART_MASK +platform-genflags-y += -DFU540_ENABLED_HART_MASK=$(FU540_ENABLED_HART_MASK) +endif diff --git a/platform/sifive/fu540/platform.c b/platform/sifive/fu540/platform.c index 56ca666..ea6ced9 100644 --- a/platform/sifive/fu540/platform.c +++ b/platform/sifive/fu540/platform.c @@ -34,7 +34,15 @@ #define FU540_UART1_ADDR 0x10011000 #define FU540_UART_BAUDRATE 115200 -#define FU540_HARITD_ENABLED 1 +/** + * The FU540 SoC has 5 HARTs but HART ID 0 doesn't have S mode. enable only + * HARTs 1 to 4. + */ +#ifndef FU540_ENABLED_HART_MASK +#define FU540_ENABLED_HART_MASK (1 << 1 | 1 << 2 | 1 << 3 | 1 << 4) +#endif + +#define FU540_HARITD_DISABLED ~(FU540_ENABLED_HART_MASK) /* PRCI clock related macros */ //TODO: Do we need a separate driver for this ? @@ -183,7 +191,7 @@ struct sbi_platform platform = { .features = SBI_PLATFORM_DEFAULT_FEATURES, .hart_count = FU540_HART_COUNT, .hart_stack_size = FU540_HART_STACK_SIZE, - .disabled_hart_mask = ~(1 << FU540_HARITD_ENABLED), + .disabled_hart_mask = FU540_HARITD_DISABLED, .pmp_region_count = fu540_pmp_region_count, .pmp_region_info = fu540_pmp_region_info, .final_init = fu540_final_init, |