diff options
| author | Yu Chien Peter Lin <peterlin@andestech.com> | 2022-10-14 03:32:49 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2022-10-23 08:00:21 +0300 |
| commit | 6f3258e67187554b1202d3d2a065ef1adcdde3e6 (patch) | |
| tree | 3319ff8c5963d68bafaf19f713ae277d3ea17794 /platform | |
| parent | 127a3f2ab4e4c8245046529ac6102aafe58b3a51 (diff) | |
| download | opensbi-6f3258e67187554b1202d3d2a065ef1adcdde3e6.tar.xz | |
platform: andes/ae350: Add fw_platform_init for platform initialization
This patch adds fw_platform_init() to initialize ae350 platform.name
and platform.hart_count by parsing device tree.
Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'platform')
| -rw-r--r-- | platform/andes/ae350/platform.c | 51 | ||||
| -rw-r--r-- | platform/andes/ae350/platform.h | 2 |
2 files changed, 49 insertions, 4 deletions
diff --git a/platform/andes/ae350/platform.c b/platform/andes/ae350/platform.c index 98acaaa..cf5417c 100644 --- a/platform/andes/ae350/platform.c +++ b/platform/andes/ae350/platform.c @@ -6,14 +6,18 @@ * Authors: * Zong Li <zong@andestech.com> * Nylon Chen <nylon7@andestech.com> + * Yu Chien Peter Lin <peterlin@andestech.com> */ +#include <libfdt.h> #include <sbi/riscv_asm.h> #include <sbi/riscv_encoding.h> #include <sbi/sbi_console.h> #include <sbi/sbi_const.h> +#include <sbi/sbi_hartmask.h> #include <sbi/sbi_ipi.h> #include <sbi/sbi_platform.h> +#include <sbi/sbi_string.h> #include <sbi/sbi_trap.h> #include <sbi_utils/fdt/fdt_helper.h> #include <sbi_utils/fdt/fdt_fixup.h> @@ -25,6 +29,49 @@ #include "plicsw.h" #include "cache.h" +struct sbi_platform platform; +unsigned long fw_platform_init(unsigned long arg0, unsigned long arg1, + unsigned long arg2, unsigned long arg3, + unsigned long arg4) +{ + const char *model; + void *fdt = (void *)arg1; + u32 hartid, hart_count = 0; + int rc, root_offset, cpus_offset, cpu_offset, len; + + root_offset = fdt_path_offset(fdt, "/"); + if (root_offset < 0) + goto fail; + + model = fdt_getprop(fdt, root_offset, "model", &len); + if (model) + sbi_strncpy(platform.name, model, sizeof(platform.name) - 1); + + cpus_offset = fdt_path_offset(fdt, "/cpus"); + if (cpus_offset < 0) + goto fail; + + fdt_for_each_subnode(cpu_offset, fdt, cpus_offset) { + rc = fdt_parse_hart_id(fdt, cpu_offset, &hartid); + if (rc) + continue; + + if (SBI_HARTMASK_MAX_BITS <= hartid) + continue; + + hart_count++; + } + + platform.hart_count = hart_count; + + /* Return original FDT pointer */ + return arg1; + +fail: + while (1) + wfi(); +} + /* Platform final initialization. */ static int ae350_final_init(bool cold_boot) { @@ -123,14 +170,14 @@ const struct sbi_platform_operations platform_ops = { .vendor_ext_provider = ae350_vendor_ext_provider }; -const struct sbi_platform platform = { +struct sbi_platform platform = { .opensbi_version = OPENSBI_VERSION, .platform_version = SBI_PLATFORM_VERSION(CONFIG_PLATFORM_ANDES_AE350_MAJOR_VER, CONFIG_PLATFORM_ANDES_AE350_MINOR_VER), .name = CONFIG_PLATFORM_ANDES_AE350_NAME, .features = SBI_PLATFORM_DEFAULT_FEATURES, - .hart_count = AE350_HART_COUNT, + .hart_count = SBI_HARTMASK_MAX_BITS, .hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE, .platform_ops_addr = (unsigned long)&platform_ops }; diff --git a/platform/andes/ae350/platform.h b/platform/andes/ae350/platform.h index 3264b6f..3003bb4 100644 --- a/platform/andes/ae350/platform.h +++ b/platform/andes/ae350/platform.h @@ -11,8 +11,6 @@ #ifndef _AE350_PLATFORM_H_ #define _AE350_PLATFORM_H_ -#define AE350_HART_COUNT 4 - #define AE350_PLICSW_ADDR 0xe6400000 #define AE350_L2C_ADDR 0xe0500000 |