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loongarch: Add auxiliary files

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Add support for manipulating architectural cache and timers, and EFI
memory maps.

Signed-off-by: Zhou Yang <zhouyang@loongson.cn>
Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Xiaotian Wu 2023-04-27 15:46:19 +08:00 committed by Daniel Kiper
parent 0b4693e32c
commit d33cbf2d8f
9 changed files with 239 additions and 3 deletions
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3
grub-core/kern/efi/mm.c
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@ -654,7 +654,8 @@ grub_efi_mm_init (void)
grub_mm_add_region_fn = grub_efi_mm_add_regions;
}
#if defined (__aarch64__) || defined (__arm__) || defined (__riscv)
#if defined (__aarch64__) || defined (__arm__) || defined (__riscv) || \
defined (__loongarch__)
grub_err_t
grub_efi_get_ram_base(grub_addr_t *base_addr)
{

39
grub-core/kern/loongarch64/cache.c Normal file
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@ -0,0 +1,39 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2023 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/cache.h>
#include <grub/misc.h>
/* Prototypes for asm functions. */
void grub_arch_clean_dcache_range (void);
void grub_arch_invalidate_icache_range (void);
void
grub_arch_sync_caches (void *address __attribute__((unused)),
grub_size_t len __attribute__((unused)))
{
grub_arch_clean_dcache_range ();
grub_arch_invalidate_icache_range ();
}
void
grub_arch_sync_dma_caches (volatile void *address __attribute__((unused)),
grub_size_t len __attribute__((unused)))
{
/* DMA non-coherent devices not supported yet */
}

33
grub-core/kern/loongarch64/cache_flush.S Normal file
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@ -0,0 +1,33 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2023 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/symbol.h>
.file "cache_flush.S"
.text
/*
* No further work to do because cache consistency is maintained by hardware on
* LoongArch.
*/
FUNCTION(grub_arch_clean_dcache_range)
dbar 0
jr $ra
FUNCTION(grub_arch_invalidate_icache_range)
ibar 0
jr $ra

77
grub-core/kern/loongarch64/efi/init.c Normal file
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@ -0,0 +1,77 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2023 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/env.h>
#include <grub/kernel.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/time.h>
#include <grub/efi/efi.h>
#include <grub/loader.h>
#define EFI_TIMER_PERIOD_MILLISECONDS(ms) ((grub_uint64_t)(ms * 10000))
static grub_uint64_t tmr;
static grub_efi_event_t tmr_evt;
static grub_uint64_t
grub_efi_get_time_ms (void)
{
return tmr;
}
static void
grub_loongson_increment_timer (grub_efi_event_t event __attribute__ ((unused)),
void *context __attribute__ ((unused)))
{
tmr += 10;
}
void
grub_machine_init (void)
{
grub_efi_boot_services_t *b;
grub_efi_init ();
b = grub_efi_system_table->boot_services;
efi_call_5 (b->create_event, GRUB_EFI_EVT_TIMER | GRUB_EFI_EVT_NOTIFY_SIGNAL,
GRUB_EFI_TPL_CALLBACK, grub_loongson_increment_timer, NULL, &tmr_evt);
efi_call_3 (b->set_timer, tmr_evt, GRUB_EFI_TIMER_PERIODIC, EFI_TIMER_PERIOD_MILLISECONDS(10));
grub_install_get_time_ms (grub_efi_get_time_ms);
}
void
grub_machine_fini (int flags)
{
grub_efi_boot_services_t *b;
if (!(flags & GRUB_LOADER_FLAG_NORETURN))
return;
b = grub_efi_system_table->boot_services;
efi_call_3 (b->set_timer, tmr_evt, GRUB_EFI_TIMER_CANCEL, 0);
efi_call_1 (b->close_event, tmr_evt);
grub_efi_fini ();
if (!(flags & GRUB_LOADER_FLAG_EFI_KEEP_ALLOCATED_MEMORY))
grub_efi_memory_fini ();
}

2
grub-core/lib/efi/halt.c
View File

@ -31,7 +31,7 @@ grub_halt (void)
grub_machine_fini (GRUB_LOADER_FLAG_NORETURN |
GRUB_LOADER_FLAG_EFI_KEEP_ALLOCATED_MEMORY);
#if !defined(__ia64__) && !defined(__arm__) && !defined(__aarch64__) && \
!defined(__riscv)
!defined(__loongarch__) && !defined(__riscv)
grub_acpi_halt ();
#endif
efi_call_4 (grub_efi_system_table->runtime_services->reset_system,

2
include/grub/efi/efi.h
View File

@ -110,7 +110,7 @@ extern void (*EXPORT_VAR(grub_efi_net_config)) (grub_efi_handle_t hnd,
char **device,
char **path);
#if defined(__arm__) || defined(__aarch64__) || defined(__riscv)
#if defined(__arm__) || defined(__aarch64__) || defined(__riscv) || defined(__loongarch__)
void *EXPORT_FUNC(grub_efi_get_firmware_fdt)(void);
grub_err_t EXPORT_FUNC(grub_efi_get_ram_base)(grub_addr_t *);
#include <grub/file.h>

24
include/grub/loongarch64/efi/memory.h Normal file
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@ -0,0 +1,24 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2023 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_MEMORY_CPU_HEADER
#include <grub/efi/memory.h>
#define GRUB_EFI_MAX_USABLE_ADDRESS 0xfffffffffffULL
#endif /* ! GRUB_MEMORY_CPU_HEADER */

28
include/grub/loongarch64/time.h Normal file
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@ -0,0 +1,28 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2023 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KERNEL_CPU_TIME_HEADER
#define KERNEL_CPU_TIME_HEADER 1
static inline void
grub_cpu_idle(void)
{
asm volatile ("idle 0");
}
#endif

34
include/grub/loongarch64/types.h Normal file
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@ -0,0 +1,34 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2023 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_TYPES_CPU_HEADER
#define GRUB_TYPES_CPU_HEADER 1
/* The size of void *. */
#define GRUB_TARGET_SIZEOF_VOID_P 8
/* The size of long. */
#define GRUB_TARGET_SIZEOF_LONG 8
/* LoongArch is little-endian. */
#undef GRUB_TARGET_WORDS_BIGENDIAN
/* Unaligned accesses are only supported if MMU is enabled. */
#undef GRUB_HAVE_UNALIGNED_ACCESS
#endif /* ! GRUB_TYPES_CPU_HEADER */