diff options
| author | Anup Patel <anup.patel@wdc.com> | 2020-05-12 18:38:31 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-05-23 10:36:43 +0530 |
| commit | a9a97511851198559e75640a9e5e67f65695dc2e (patch) | |
| tree | 3c7a01bfa30aab552fbb049f5fea25b8007a2d83 /platform/fpga/openpiton | |
| parent | d30bb684481b6be642a0eaa9e7f0778d6519cc15 (diff) | |
lib: utils: Allow CLINT functions to be used for multiple CLINTs
We extend CLINT cold init function to have a "struct clint_data *"
parameter pointing to CLINT details. This allows platforms to use
CLINT functions for multiple CLINT instances.
When multiple CLINTs are present, the platform can also provide
one of the CLINT as reference CLINT for other CLINTs. This will
help CLINTs to sync their time value with reference CLINT using
a time_delta computed in warm init function.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'platform/fpga/openpiton')
| -rw-r--r-- | platform/fpga/openpiton/platform.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/platform/fpga/openpiton/platform.c b/platform/fpga/openpiton/platform.c index e56ee51..095004d 100644 --- a/platform/fpga/openpiton/platform.c +++ b/platform/fpga/openpiton/platform.c @@ -35,7 +35,13 @@ static struct plic_data plic = { .addr = OPENPITON_DEFAULT_PLIC_ADDR, .num_src = OPENPITON_DEFAULT_PLIC_NUM_SOURCES, }; -static unsigned long clint_addr = OPENPITON_DEFAULT_CLINT_ADDR; + +static struct clint_data clint = { + .addr = OPENPITON_DEFAULT_CLINT_ADDR, + .first_hartid = 0, + .hart_count = OPENPITON_DEFAULT_HART_COUNT, + .has_64bit_mmio = TRUE, +}; /* * OpenPiton platform early initialization. @@ -45,7 +51,7 @@ static int openpiton_early_init(bool cold_boot) void *fdt; struct platform_uart_data uart_data; struct plic_data plic_data; - unsigned long clint_data; + unsigned long clint_addr; int rc; if (!cold_boot) @@ -60,9 +66,9 @@ static int openpiton_early_init(bool cold_boot) if (!rc) plic = plic_data; - rc = fdt_parse_compat_addr(fdt, &clint_data, "riscv,clint0"); + rc = fdt_parse_compat_addr(fdt, &clint_addr, "riscv,clint0"); if (!rc) - clint_addr = clint_data; + clint.addr = clint_addr; return 0; } @@ -143,8 +149,7 @@ static int openpiton_ipi_init(bool cold_boot) int ret; if (cold_boot) { - ret = clint_cold_ipi_init(clint_addr, - OPENPITON_DEFAULT_HART_COUNT); + ret = clint_cold_ipi_init(&clint); if (ret) return ret; } @@ -160,8 +165,7 @@ static int openpiton_timer_init(bool cold_boot) int ret; if (cold_boot) { - ret = clint_cold_timer_init(clint_addr, - OPENPITON_DEFAULT_HART_COUNT, TRUE); + ret = clint_cold_timer_init(&clint, NULL); if (ret) return ret; } |