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-rw-r--r--grub-core/kern/arm64/cache.c63
-rw-r--r--grub-core/kern/arm64/cache_flush.S55
-rw-r--r--grub-core/kern/arm64/dl.c198
-rw-r--r--grub-core/kern/arm64/dl_helper.c134
-rw-r--r--grub-core/kern/arm64/efi/init.c63
-rw-r--r--grub-core/kern/arm64/efi/startup.S39
6 files changed, 552 insertions, 0 deletions
diff --git a/grub-core/kern/arm64/cache.c b/grub-core/kern/arm64/cache.c
new file mode 100644
index 0000000..b84383d
--- /dev/null
+++ b/grub-core/kern/arm64/cache.c
@@ -0,0 +1,63 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 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>
+
+static grub_int64_t dlinesz;
+static grub_int64_t ilinesz;
+
+/* Prototypes for asm functions. */
+void grub_arch_clean_dcache_range (grub_addr_t beg, grub_addr_t end,
+ grub_uint64_t line_size);
+void grub_arch_invalidate_icache_range (grub_addr_t beg, grub_addr_t end,
+ grub_uint64_t line_size);
+
+static void
+probe_caches (void)
+{
+ grub_uint64_t cache_type;
+
+ /* Read Cache Type Register */
+ asm volatile ("mrs %0, ctr_el0": "=r"(cache_type));
+
+ dlinesz = 4 << ((cache_type >> 16) & 0xf);
+ ilinesz = 4 << (cache_type & 0xf);
+
+ grub_dprintf("cache", "D$ line size: %lld\n", (long long) dlinesz);
+ grub_dprintf("cache", "I$ line size: %lld\n", (long long) ilinesz);
+}
+
+void
+grub_arch_sync_caches (void *address, grub_size_t len)
+{
+ grub_uint64_t start, end, max_align;
+
+ if (dlinesz == 0)
+ probe_caches();
+ if (dlinesz == 0)
+ grub_fatal ("Unknown cache line size!");
+
+ max_align = dlinesz > ilinesz ? dlinesz : ilinesz;
+
+ start = ALIGN_DOWN ((grub_uint64_t) address, max_align);
+ end = ALIGN_UP ((grub_uint64_t) address + len, max_align);
+
+ grub_arch_clean_dcache_range (start, end, dlinesz);
+ grub_arch_invalidate_icache_range (start, end, ilinesz);
+}
diff --git a/grub-core/kern/arm64/cache_flush.S b/grub-core/kern/arm64/cache_flush.S
new file mode 100644
index 0000000..e064f7e
--- /dev/null
+++ b/grub-core/kern/arm64/cache_flush.S
@@ -0,0 +1,55 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 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
+
+/*
+ * Simple cache maintenance functions
+ */
+
+// x0 - *beg (inclusive)
+// x1 - *end (exclusive)
+// x2 - line size
+FUNCTION(grub_arch_clean_dcache_range)
+ // Clean data cache for range to point-of-unification
+1: cmp x0, x1
+ b.ge 2f
+ dc cvau, x0 // Clean Virtual Address to PoU
+ add x0, x0, x2 // Next line
+ b 1b
+2: dsb ish
+ isb
+ ret
+
+// x0 - *beg (inclusive)
+// x1 - *end (exclusive)
+// x2 - line size
+FUNCTION(grub_arch_invalidate_icache_range)
+ // Invalidate instruction cache for range to point-of-unification
+1: cmp x0, x1
+ b.ge 2f
+ ic ivau, x0 // Invalidate Virtual Address to PoU
+ add x0, x0, x2 // Next line
+ b 1b
+ // Branch predictor invalidation not needed on AArch64
+2: dsb ish
+ isb
+ ret
diff --git a/grub-core/kern/arm64/dl.c b/grub-core/kern/arm64/dl.c
new file mode 100644
index 0000000..512e5a8
--- /dev/null
+++ b/grub-core/kern/arm64/dl.c
@@ -0,0 +1,198 @@
+/* dl.c - arch-dependent part of loadable module support */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 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/dl.h>
+#include <grub/elf.h>
+#include <grub/misc.h>
+#include <grub/err.h>
+#include <grub/mm.h>
+#include <grub/i18n.h>
+#include <grub/cpu/reloc.h>
+
+#define LDR 0x58000050
+#define BR 0xd61f0200
+
+
+/*
+ * Check if EHDR is a valid ELF header.
+ */
+grub_err_t
+grub_arch_dl_check_header (void *ehdr)
+{
+ Elf_Ehdr *e = ehdr;
+
+ /* Check the magic numbers. */
+ if (e->e_ident[EI_CLASS] != ELFCLASS64
+ || e->e_ident[EI_DATA] != ELFDATA2LSB || e->e_machine != EM_AARCH64)
+ return grub_error (GRUB_ERR_BAD_OS,
+ N_("invalid arch-dependent ELF magic"));
+
+ return GRUB_ERR_NONE;
+}
+
+#pragma GCC diagnostic ignored "-Wcast-align"
+
+/*
+ * Unified function for both REL and RELA
+ */
+grub_err_t
+grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr,
+ Elf_Shdr *s, grub_dl_segment_t seg)
+{
+ Elf_Rel *rel, *max;
+ unsigned unmatched_adr_got_page = 0;
+
+ for (rel = (Elf_Rel *) ((char *) ehdr + s->sh_offset),
+ max = (Elf_Rel *) ((char *) rel + s->sh_size);
+ rel < max;
+ rel = (Elf_Rel *) ((char *) rel + s->sh_entsize))
+ {
+ Elf_Sym *sym;
+ void *place;
+ grub_uint64_t sym_addr;
+
+ if (rel->r_offset >= seg->size)
+ return grub_error (GRUB_ERR_BAD_MODULE,
+ "reloc offset is out of the segment");
+
+ sym = (Elf_Sym *) ((char *) mod->symtab
+ + mod->symsize * ELF_R_SYM (rel->r_info));
+
+ sym_addr = sym->st_value;
+ if (s->sh_type == SHT_RELA)
+ sym_addr += ((Elf_Rela *) rel)->r_addend;
+
+ place = (void *) ((grub_addr_t) seg->addr + rel->r_offset);
+
+ switch (ELF_R_TYPE (rel->r_info))
+ {
+ case R_AARCH64_ABS64:
+ {
+ grub_uint64_t *abs_place = place;
+
+ grub_dprintf ("dl", " reloc_abs64 %p => 0x%016llx\n",
+ place, (unsigned long long) sym_addr);
+
+ *abs_place = (grub_uint64_t) sym_addr;
+ }
+ break;
+ case R_AARCH64_ADD_ABS_LO12_NC:
+ grub_arm64_set_abs_lo12 (place, sym_addr);
+ break;
+ case R_AARCH64_LDST64_ABS_LO12_NC:
+ grub_arm64_set_abs_lo12_ldst64 (place, sym_addr);
+ break;
+ case R_AARCH64_CALL26:
+ case R_AARCH64_JUMP26:
+ {
+ grub_int64_t offset = sym_addr - (grub_uint64_t) place;
+
+ if (!grub_arm_64_check_xxxx26_offset (offset))
+ {
+ struct grub_arm64_trampoline *tp = mod->trampptr;
+ mod->trampptr = tp + 1;
+ tp->ldr = LDR;
+ tp->br = BR;
+ tp->addr = sym_addr;
+ offset = (grub_uint8_t *) tp - (grub_uint8_t *) place;
+ }
+
+ if (!grub_arm_64_check_xxxx26_offset (offset))
+ return grub_error (GRUB_ERR_BAD_MODULE,
+ "trampoline out of range");
+
+ grub_arm64_set_xxxx26_offset (place, offset);
+ }
+ break;
+ case R_AARCH64_PREL32:
+ {
+ grub_int64_t value;
+ Elf64_Word *addr32 = place;
+ value = ((grub_int32_t) *addr32) + sym_addr -
+ (Elf64_Xword) (grub_addr_t) seg->addr - rel->r_offset;
+ if (value != (grub_int32_t) value)
+ return grub_error (GRUB_ERR_BAD_MODULE, "relocation out of range");
+ grub_dprintf("dl", " reloc_prel32 %p => 0x%016llx\n",
+ place, (unsigned long long) sym_addr);
+ *addr32 = value;
+ }
+ break;
+ case R_AARCH64_ADR_GOT_PAGE:
+ {
+ grub_uint64_t *gp = mod->gotptr;
+ Elf_Rela *rel2;
+ grub_int64_t gpoffset = ((grub_uint64_t) gp & ~0xfffULL) - (((grub_uint64_t) place) & ~0xfffULL);
+ *gp = (grub_uint64_t) sym_addr;
+ mod->gotptr = gp + 1;
+ unmatched_adr_got_page++;
+ grub_dprintf("dl", " reloc_got %p => 0x%016llx (0x%016llx)\n",
+ place, (unsigned long long) sym_addr, (unsigned long long) gp);
+ if (!grub_arm64_check_hi21_signed (gpoffset))
+ return grub_error (GRUB_ERR_BAD_MODULE,
+ "HI21 out of range");
+ grub_arm64_set_hi21(place, gpoffset);
+ for (rel2 = (Elf_Rela *) ((char *) rel + s->sh_entsize);
+ rel2 < (Elf_Rela *) max;
+ rel2 = (Elf_Rela *) ((char *) rel2 + s->sh_entsize))
+ if (ELF_R_SYM (rel2->r_info)
+ == ELF_R_SYM (rel->r_info)
+ && ((Elf_Rela *) rel)->r_addend == rel2->r_addend
+ && ELF_R_TYPE (rel2->r_info) == R_AARCH64_LD64_GOT_LO12_NC)
+ {
+ grub_arm64_set_abs_lo12_ldst64 ((void *) ((grub_addr_t) seg->addr + rel2->r_offset),
+ (grub_uint64_t)gp);
+ break;
+ }
+ if (rel2 >= (Elf_Rela *) max)
+ return grub_error (GRUB_ERR_BAD_MODULE,
+ "ADR_GOT_PAGE without matching LD64_GOT_LO12_NC");
+ }
+ break;
+ case R_AARCH64_LD64_GOT_LO12_NC:
+ if (unmatched_adr_got_page == 0)
+ return grub_error (GRUB_ERR_BAD_MODULE,
+ "LD64_GOT_LO12_NC without matching ADR_GOT_PAGE");
+ unmatched_adr_got_page--;
+ break;
+ case R_AARCH64_ADR_PREL_PG_HI21:
+ {
+ grub_int64_t offset = (sym_addr & ~0xfffULL) - (((grub_uint64_t) place) & ~0xfffULL);
+
+ if (!grub_arm64_check_hi21_signed (offset))
+ return grub_error (GRUB_ERR_BAD_MODULE,
+ "HI21 out of range");
+
+ grub_arm64_set_hi21 (place, offset);
+ }
+ break;
+
+ default:
+ {
+ char rel_info[17]; /* log16(2^64) = 16, plus NUL. */
+
+ grub_snprintf (rel_info, sizeof (rel_info) - 1, "%" PRIxGRUB_UINT64_T,
+ ELF_R_TYPE (rel->r_info));
+ return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ N_("relocation 0x%s is not implemented yet"), rel_info);
+ }
+ }
+ }
+
+ return GRUB_ERR_NONE;
+}
diff --git a/grub-core/kern/arm64/dl_helper.c b/grub-core/kern/arm64/dl_helper.c
new file mode 100644
index 0000000..e00c198
--- /dev/null
+++ b/grub-core/kern/arm64/dl_helper.c
@@ -0,0 +1,134 @@
+/* dl_helper.c - relocation helper functions for modules and grub-mkimage */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 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/dl.h>
+#include <grub/elf.h>
+#include <grub/misc.h>
+#include <grub/err.h>
+#include <grub/mm.h>
+#include <grub/i18n.h>
+#include <grub/arm64/reloc.h>
+
+/*
+ * grub_arm64_reloc_xxxx26():
+ *
+ * JUMP26/CALL26 relocations for B and BL instructions.
+ */
+
+int
+grub_arm_64_check_xxxx26_offset (grub_int64_t offset)
+{
+ const grub_ssize_t offset_low = -(1 << 27), offset_high = (1 << 27) - 1;
+
+ if ((offset < offset_low) || (offset > offset_high))
+ return 0;
+ return 1;
+}
+
+void
+grub_arm64_set_xxxx26_offset (grub_uint32_t *place, grub_int64_t offset)
+{
+ const grub_uint32_t insmask = grub_cpu_to_le32_compile_time (0xfc000000);
+
+ grub_dprintf ("dl", " reloc_xxxx64 %p %c= 0x%llx\n",
+ place, offset > 0 ? '+' : '-',
+ offset < 0 ? (long long) -(unsigned long long) offset : offset);
+
+ *place &= insmask;
+ *place |= grub_cpu_to_le32 (offset >> 2) & ~insmask;
+}
+
+int
+grub_arm64_check_hi21_signed (grub_int64_t offset)
+{
+ if (offset != (grub_int64_t)(grub_int32_t)offset)
+ return 0;
+ return 1;
+}
+
+void
+grub_arm64_set_hi21 (grub_uint32_t *place, grub_int64_t offset)
+{
+ const grub_uint32_t insmask = grub_cpu_to_le32_compile_time (0x9f00001f);
+ grub_uint32_t val;
+
+ offset >>= 12;
+
+ val = ((offset & 3) << 29) | (((offset >> 2) & 0x7ffff) << 5);
+
+ *place &= insmask;
+ *place |= grub_cpu_to_le32 (val) & ~insmask;
+}
+
+void
+grub_arm64_set_abs_lo12 (grub_uint32_t *place, grub_int64_t target)
+{
+ const grub_uint32_t insmask = grub_cpu_to_le32_compile_time (0xffc003ff);
+
+ *place &= insmask;
+ *place |= grub_cpu_to_le32 (target << 10) & ~insmask;
+}
+
+void
+grub_arm64_set_abs_lo12_ldst64 (grub_uint32_t *place, grub_int64_t target)
+{
+ const grub_uint32_t insmask = grub_cpu_to_le32_compile_time (0xfff803ff);
+
+ *place &= insmask;
+ *place |= grub_cpu_to_le32 (target << 7) & ~insmask;
+}
+
+#pragma GCC diagnostic ignored "-Wcast-align"
+
+grub_err_t
+grub_arm64_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
+ grub_size_t *got)
+{
+ const Elf64_Ehdr *e = ehdr;
+ const Elf64_Shdr *s;
+ unsigned i;
+
+ *tramp = 0;
+ *got = 0;
+
+ for (i = 0, s = (Elf64_Shdr *) ((char *) e + grub_le_to_cpu64 (e->e_shoff));
+ i < grub_le_to_cpu16 (e->e_shnum);
+ i++, s = (Elf64_Shdr *) ((char *) s + grub_le_to_cpu16 (e->e_shentsize)))
+ if (s->sh_type == grub_cpu_to_le32_compile_time (SHT_REL)
+ || s->sh_type == grub_cpu_to_le32_compile_time (SHT_RELA))
+ {
+ const Elf64_Rela *rel, *max;
+
+ for (rel = (Elf64_Rela *) ((char *) e + grub_le_to_cpu64 (s->sh_offset)),
+ max = (const Elf64_Rela *) ((char *) rel + grub_le_to_cpu64 (s->sh_size));
+ rel < max; rel = (const Elf64_Rela *) ((char *) rel + grub_le_to_cpu64 (s->sh_entsize)))
+ switch (ELF64_R_TYPE (rel->r_info))
+ {
+ case R_AARCH64_CALL26:
+ case R_AARCH64_JUMP26:
+ *tramp += sizeof (struct grub_arm64_trampoline);
+ break;
+ case R_AARCH64_ADR_GOT_PAGE:
+ *got += 8;
+ break;
+ }
+ }
+
+ return GRUB_ERR_NONE;
+}
diff --git a/grub-core/kern/arm64/efi/init.c b/grub-core/kern/arm64/efi/init.c
new file mode 100644
index 0000000..5010cae
--- /dev/null
+++ b/grub-core/kern/arm64/efi/init.c
@@ -0,0 +1,63 @@
+/* init.c - initialize an arm-based EFI system */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 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>
+
+static grub_uint64_t timer_frequency_in_khz;
+
+static grub_uint64_t
+grub_efi_get_time_ms (void)
+{
+ grub_uint64_t tmr;
+ asm volatile("mrs %0, cntvct_el0" : "=r" (tmr));
+
+ return tmr / timer_frequency_in_khz;
+}
+
+
+void
+grub_machine_init (void)
+{
+ grub_uint64_t timer_frequency;
+
+ grub_efi_init ();
+
+ asm volatile("mrs %0, cntfrq_el0" : "=r" (timer_frequency));
+ timer_frequency_in_khz = timer_frequency / 1000;
+
+ grub_install_get_time_ms (grub_efi_get_time_ms);
+}
+
+void
+grub_machine_fini (int flags)
+{
+ if (!(flags & GRUB_LOADER_FLAG_NORETURN))
+ return;
+
+ grub_efi_fini ();
+
+ if (!(flags & GRUB_LOADER_FLAG_EFI_KEEP_ALLOCATED_MEMORY))
+ grub_efi_memory_fini ();
+}
diff --git a/grub-core/kern/arm64/efi/startup.S b/grub-core/kern/arm64/efi/startup.S
new file mode 100644
index 0000000..666a7ee
--- /dev/null
+++ b/grub-core/kern/arm64/efi/startup.S
@@ -0,0 +1,39 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 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 "startup.S"
+ .text
+FUNCTION(_start)
+ /*
+ * EFI_SYSTEM_TABLE and EFI_HANDLE are passed in x1/x0.
+ */
+ ldr x2, efi_image_handle_val
+ str x0, [x2]
+ ldr x2, efi_system_table_val
+ str x1, [x2]
+ ldr x2, grub_main_val
+ br x2
+grub_main_val:
+ .quad EXT_C(grub_main)
+efi_system_table_val:
+ .quad EXT_C(grub_efi_system_table)
+efi_image_handle_val:
+ .quad EXT_C(grub_efi_image_handle)
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 17:00:39 +0000