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platform: andes/ae350: Add fw_platform_init for platform initialization

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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>
This commit is contained in:
Yu Chien Peter Lin
2022-10-14 08:32:49 +08:00
committed by Anup Patel
parent 127a3f2ab4
commit 6f3258e671
2 changed files with 49 additions and 4 deletions
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51
platform/andes/ae350/platform.c
View File

@@ -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
};

2
platform/andes/ae350/platform.h
View File

@@ -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