123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169 |
- /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2019 Andes Technology Corporation
- *
- * 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_domain.h>
- #include <sbi_utils/fdt/fdt_fixup.h>
- #include <sbi_utils/fdt/fdt_helper.h>
- #include <sbi_utils/ipi/fdt_ipi.h>
- #include <sbi_utils/irqchip/fdt_irqchip.h>
- #include <sbi_utils/reset/fdt_reset.h>
- #include <sbi_utils/serial/fdt_serial.h>
- #include <sbi_utils/timer/fdt_timer.h>
- #include "platform.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)
- {
- void *fdt;
- if (!cold_boot)
- return 0;
- fdt_reset_init();
- fdt = fdt_get_address();
- fdt_fixups(fdt);
- fdt_domain_fixup(fdt);
- return 0;
- }
- /* Vendor-Specific SBI handler */
- static int ae350_vendor_ext_provider(long extid, long funcid,
- const struct sbi_trap_regs *regs, unsigned long *out_value,
- struct sbi_trap_info *out_trap)
- {
- int ret = 0;
- switch (funcid) {
- case SBI_EXT_ANDES_GET_MCACHE_CTL_STATUS:
- *out_value = csr_read(CSR_MCACHECTL);
- break;
- case SBI_EXT_ANDES_GET_MMISC_CTL_STATUS:
- *out_value = csr_read(CSR_MMISCCTL);
- break;
- case SBI_EXT_ANDES_SET_MCACHE_CTL:
- ret = mcall_set_mcache_ctl(regs->a0);
- break;
- case SBI_EXT_ANDES_SET_MMISC_CTL:
- ret = mcall_set_mmisc_ctl(regs->a0);
- break;
- case SBI_EXT_ANDES_ICACHE_OP:
- ret = mcall_icache_op(regs->a0);
- break;
- case SBI_EXT_ANDES_DCACHE_OP:
- ret = mcall_dcache_op(regs->a0);
- break;
- case SBI_EXT_ANDES_L1CACHE_I_PREFETCH:
- ret = mcall_l1_cache_i_prefetch_op(regs->a0);
- break;
- case SBI_EXT_ANDES_L1CACHE_D_PREFETCH:
- ret = mcall_l1_cache_d_prefetch_op(regs->a0);
- break;
- case SBI_EXT_ANDES_NON_BLOCKING_LOAD_STORE:
- ret = mcall_non_blocking_load_store(regs->a0);
- break;
- case SBI_EXT_ANDES_WRITE_AROUND:
- ret = mcall_write_around(regs->a0);
- break;
- default:
- sbi_printf("Unsupported vendor sbi call : %ld\n", funcid);
- asm volatile("ebreak");
- }
- return ret;
- }
- static int ae350_domains_init(void)
- {
- return fdt_domains_populate(fdt_get_address());
- }
- /* Platform descriptor. */
- const struct sbi_platform_operations platform_ops = {
- .final_init = ae350_final_init,
- .domains_init = ae350_domains_init,
- .console_init = fdt_serial_init,
- .irqchip_init = fdt_irqchip_init,
- .ipi_init = fdt_ipi_init,
- .timer_init = fdt_timer_init,
- .vendor_ext_provider = ae350_vendor_ext_provider
- };
- 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 = SBI_HARTMASK_MAX_BITS,
- .hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
- .platform_ops_addr = (unsigned long)&platform_ops
- };
|