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-rw-r--r--grub-core/kern/powerpc/cache.S26
-rw-r--r--grub-core/kern/powerpc/cache_flush.S43
-rw-r--r--grub-core/kern/powerpc/compiler-rt.S130
-rw-r--r--grub-core/kern/powerpc/dl.c169
-rw-r--r--grub-core/kern/powerpc/ieee1275/startup.S67
5 files changed, 435 insertions, 0 deletions
diff --git a/grub-core/kern/powerpc/cache.S b/grub-core/kern/powerpc/cache.S
new file mode 100644
index 0000000..d85e68d
--- /dev/null
+++ b/grub-core/kern/powerpc/cache.S
@@ -0,0 +1,26 @@
+/* cache.S - Flush the processor cache for a specific region. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2004,2007,2010 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/>.
+ */
+
+ .text
+
+ .align 2
+ .globl grub_arch_sync_caches
+grub_arch_sync_caches:
+#include "cache_flush.S"
+ blr
diff --git a/grub-core/kern/powerpc/cache_flush.S b/grub-core/kern/powerpc/cache_flush.S
new file mode 100644
index 0000000..1410f78
--- /dev/null
+++ b/grub-core/kern/powerpc/cache_flush.S
@@ -0,0 +1,43 @@
+/* cache.S - Flush the processor cache for a specific region. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2004,2007,2010 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/>.
+ */
+
+#undef CACHE_LINE_BYTES
+#define CACHE_LINE_BYTES 32
+
+ /* `address' may not be CACHE_LINE_BYTES-aligned. */
+ andi. 6, 3, CACHE_LINE_BYTES - 1 /* Find the misalignment. */
+ add 4, 4, 6 /* Adjust `size' to compensate. */
+
+ /* Force the dcache lines to memory. */
+ li 5, 0
+1: dcbst 5, 3
+ addi 5, 5, CACHE_LINE_BYTES
+ cmpw 5, 4
+ blt 1b
+ sync /* Force all dcbsts to complete. */
+
+ /* Invalidate the icache lines. */
+ li 5, 0
+1: icbi 5, 3
+ addi 5, 5, CACHE_LINE_BYTES
+ cmpw 5, 4
+ blt 1b
+ sync /* Force all icbis to complete. */
+ isync /* Discard partially executed instructions that were
+ loaded from the invalid icache. */
diff --git a/grub-core/kern/powerpc/compiler-rt.S b/grub-core/kern/powerpc/compiler-rt.S
new file mode 100644
index 0000000..b3b912d
--- /dev/null
+++ b/grub-core/kern/powerpc/compiler-rt.S
@@ -0,0 +1,130 @@
+/*
+ * Special support for eabi and SVR4
+ *
+ * Copyright (C) 1995-2014 Free Software Foundation, Inc.
+ * Written By Michael Meissner
+ * 64-bit support written by David Edelsohn
+ *
+ * This file 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, or (at your option) any
+ * later version.
+ *
+ * This file 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.
+ *
+ * Under Section 7 of GPL version 3, you are granted additional
+ * permissions described in the GCC Runtime Library Exception, version
+ * 3.1, as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License and
+ * a copy of the GCC Runtime Library Exception along with this program;
+ * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+/* Do any initializations needed for the eabi environment */
+
+#include <grub/symbol.h>
+#include <grub/dl.h>
+
+ .section ".text"
+
+#define CFI_RESTORE(reg) .cfi_restore reg
+#define CFI_OFFSET(reg, off) .cfi_offset reg, off
+#define CFI_DEF_CFA_REGISTER(reg) .cfi_def_cfa_register reg
+#define CFI_STARTPROC .cfi_startproc
+#define CFI_ENDPROC .cfi_endproc
+
+/* Routines for restoring integer registers, called by the compiler. */
+/* Called with r11 pointing to the stack header word of the caller of the */
+/* function, just beyond the end of the integer restore area. */
+
+CFI_STARTPROC
+CFI_DEF_CFA_REGISTER (11)
+CFI_OFFSET (65, 4)
+CFI_OFFSET (14, -72)
+CFI_OFFSET (15, -68)
+CFI_OFFSET (16, -64)
+CFI_OFFSET (17, -60)
+CFI_OFFSET (18, -56)
+CFI_OFFSET (19, -52)
+CFI_OFFSET (20, -48)
+CFI_OFFSET (21, -44)
+CFI_OFFSET (22, -40)
+CFI_OFFSET (23, -36)
+CFI_OFFSET (24, -32)
+CFI_OFFSET (25, -28)
+CFI_OFFSET (26, -24)
+CFI_OFFSET (27, -20)
+CFI_OFFSET (28, -16)
+CFI_OFFSET (29, -12)
+CFI_OFFSET (30, -8)
+CFI_OFFSET (31, -4)
+FUNCTION(_restgpr_14_x) lwz 14,-72(11) /* restore gp registers */
+CFI_RESTORE (14)
+FUNCTION(_restgpr_15_x) lwz 15,-68(11)
+CFI_RESTORE (15)
+FUNCTION(_restgpr_16_x) lwz 16,-64(11)
+CFI_RESTORE (16)
+FUNCTION(_restgpr_17_x) lwz 17,-60(11)
+CFI_RESTORE (17)
+FUNCTION(_restgpr_18_x) lwz 18,-56(11)
+CFI_RESTORE (18)
+FUNCTION(_restgpr_19_x) lwz 19,-52(11)
+CFI_RESTORE (19)
+FUNCTION(_restgpr_20_x) lwz 20,-48(11)
+CFI_RESTORE (20)
+FUNCTION(_restgpr_21_x) lwz 21,-44(11)
+CFI_RESTORE (21)
+FUNCTION(_restgpr_22_x) lwz 22,-40(11)
+CFI_RESTORE (22)
+FUNCTION(_restgpr_23_x) lwz 23,-36(11)
+CFI_RESTORE (23)
+FUNCTION(_restgpr_24_x) lwz 24,-32(11)
+CFI_RESTORE (24)
+FUNCTION(_restgpr_25_x) lwz 25,-28(11)
+CFI_RESTORE (25)
+FUNCTION(_restgpr_26_x) lwz 26,-24(11)
+CFI_RESTORE (26)
+FUNCTION(_restgpr_27_x) lwz 27,-20(11)
+CFI_RESTORE (27)
+FUNCTION(_restgpr_28_x) lwz 28,-16(11)
+CFI_RESTORE (28)
+FUNCTION(_restgpr_29_x) lwz 29,-12(11)
+CFI_RESTORE (29)
+FUNCTION(_restgpr_30_x) lwz 30,-8(11)
+CFI_RESTORE (30)
+FUNCTION(_restgpr_31_x) lwz 0,4(11)
+ lwz 31,-4(11)
+CFI_RESTORE (31)
+ mtlr 0
+CFI_RESTORE (65)
+ mr 1,11
+CFI_DEF_CFA_REGISTER (1)
+ blr
+CFI_ENDPROC
+
+CFI_STARTPROC
+FUNCTION(_savegpr_14) stw 14,-72(11) /* save gp registers */
+FUNCTION(_savegpr_15) stw 15,-68(11)
+FUNCTION(_savegpr_16) stw 16,-64(11)
+FUNCTION(_savegpr_17) stw 17,-60(11)
+FUNCTION(_savegpr_18) stw 18,-56(11)
+FUNCTION(_savegpr_19) stw 19,-52(11)
+FUNCTION(_savegpr_20) stw 20,-48(11)
+FUNCTION(_savegpr_21) stw 21,-44(11)
+FUNCTION(_savegpr_22) stw 22,-40(11)
+FUNCTION(_savegpr_23) stw 23,-36(11)
+FUNCTION(_savegpr_24) stw 24,-32(11)
+FUNCTION(_savegpr_25) stw 25,-28(11)
+FUNCTION(_savegpr_26) stw 26,-24(11)
+FUNCTION(_savegpr_27) stw 27,-20(11)
+FUNCTION(_savegpr_28) stw 28,-16(11)
+FUNCTION(_savegpr_29) stw 29,-12(11)
+FUNCTION(_savegpr_30) stw 30,-8(11)
+FUNCTION(_savegpr_31) stw 31,-4(11)
+ blr
+CFI_ENDPROC
diff --git a/grub-core/kern/powerpc/dl.c b/grub-core/kern/powerpc/dl.c
new file mode 100644
index 0000000..cdd61b3
--- /dev/null
+++ b/grub-core/kern/powerpc/dl.c
@@ -0,0 +1,169 @@
+/* dl.c - arch-dependent part of loadable module support */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2002,2004,2005,2007,2009 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/i18n.h>
+
+/* 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] != ELFCLASS32
+ || e->e_ident[EI_DATA] != ELFDATA2MSB
+ || e->e_machine != EM_PPC)
+ return grub_error (GRUB_ERR_BAD_OS, N_("invalid arch-dependent ELF magic"));
+
+ return GRUB_ERR_NONE;
+}
+
+/* For low-endian reverse lis and addr_high as well as ori and addr_low. */
+struct trampoline
+{
+ grub_uint32_t lis;
+ grub_uint32_t ori;
+ grub_uint32_t mtctr;
+ grub_uint32_t bctr;
+};
+
+static const struct trampoline trampoline_template =
+ {
+ 0x3d800000,
+ 0x618c0000,
+ 0x7d8903a6,
+ 0x4e800420,
+ };
+
+#pragma GCC diagnostic ignored "-Wcast-align"
+
+grub_err_t
+grub_arch_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
+ grub_size_t *got)
+{
+ const Elf_Ehdr *e = ehdr;
+ const Elf_Shdr *s;
+ unsigned i;
+
+ *tramp = 0;
+ *got = 0;
+
+ for (i = 0, s = (const Elf_Shdr *) ((const char *) e + e->e_shoff);
+ i < e->e_shnum;
+ i++, s = (const Elf_Shdr *) ((const char *) s + e->e_shentsize))
+ if (s->sh_type == SHT_RELA)
+ {
+ const Elf_Rela *rel, *max;
+
+ for (rel = (const Elf_Rela *) ((const char *) e + s->sh_offset),
+ max = rel + s->sh_size / s->sh_entsize;
+ rel < max;
+ rel++)
+ if (ELF_R_TYPE (rel->r_info) == GRUB_ELF_R_PPC_REL24
+ || ELF_R_TYPE (rel->r_info) == GRUB_ELF_R_PPC_PLTREL24)
+ (*tramp)++;
+
+ }
+
+ *tramp *= sizeof (struct trampoline);
+
+ return GRUB_ERR_NONE;
+}
+
+/* Relocate symbols. */
+grub_err_t
+grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr,
+ Elf_Shdr *s, grub_dl_segment_t seg)
+{
+ Elf_Rela *rel, *max;
+
+ for (rel = (Elf_Rela *) ((char *) ehdr + s->sh_offset),
+ max = (Elf_Rela *) ((char *) rel + s->sh_size);
+ rel < max;
+ rel = (Elf_Rela *) ((char *) rel + s->sh_entsize))
+ {
+ Elf_Word *addr;
+ Elf_Sym *sym;
+ grub_uint32_t value;
+
+ if (seg->size < rel->r_offset)
+ return grub_error (GRUB_ERR_BAD_MODULE,
+ "reloc offset is out of the segment");
+
+ addr = (Elf_Word *) ((char *) seg->addr + rel->r_offset);
+ sym = (Elf_Sym *) ((char *) mod->symtab
+ + mod->symsize * ELF_R_SYM (rel->r_info));
+
+ /* On the PPC the value does not have an explicit
+ addend, add it. */
+ value = sym->st_value + rel->r_addend;
+ switch (ELF_R_TYPE (rel->r_info))
+ {
+ case GRUB_ELF_R_PPC_ADDR16_LO:
+ *(Elf_Half *) addr = value;
+ break;
+
+ case GRUB_ELF_R_PPC_PLTREL24:
+ case GRUB_ELF_R_PPC_REL24:
+ {
+ Elf_Sword delta = value - (Elf_Word) addr;
+
+ if (delta << 6 >> 6 != delta)
+ {
+ struct trampoline *tptr = mod->trampptr;
+ grub_memcpy (tptr, &trampoline_template,
+ sizeof (*tptr));
+ delta = (grub_uint8_t *) tptr - (grub_uint8_t *) addr;
+ tptr->lis |= (((value) >> 16) & 0xffff);
+ tptr->ori |= ((value) & 0xffff);
+ mod->trampptr = tptr + 1;
+ }
+
+ if (delta << 6 >> 6 != delta)
+ return grub_error (GRUB_ERR_BAD_MODULE,
+ "relocation overflow");
+ *addr = (*addr & 0xfc000003) | (delta & 0x3fffffc);
+ break;
+ }
+
+ case GRUB_ELF_R_PPC_ADDR16_HA:
+ *(Elf_Half *) addr = (value + 0x8000) >> 16;
+ break;
+
+ case GRUB_ELF_R_PPC_ADDR32:
+ *addr = value;
+ break;
+
+ case GRUB_ELF_R_PPC_REL32:
+ *addr = value - (Elf_Word) addr;
+ break;
+
+ default:
+ return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ N_("relocation 0x%x is not implemented yet"),
+ ELF_R_TYPE (rel->r_info));
+ }
+ }
+
+ return GRUB_ERR_NONE;
+}
diff --git a/grub-core/kern/powerpc/ieee1275/startup.S b/grub-core/kern/powerpc/ieee1275/startup.S
new file mode 100644
index 0000000..21c884b
--- /dev/null
+++ b/grub-core/kern/powerpc/ieee1275/startup.S
@@ -0,0 +1,67 @@
+/* startup.S - Startup code for the PowerPC. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2003,2004,2005,2007,2008 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>
+#include <grub/offsets.h>
+
+.extern __bss_start
+.extern _end
+
+ .text
+ .align 2
+ .globl start, _start
+start:
+_start:
+ li 2, 0
+ li 13, 0
+
+ /* Stage1 won't zero BSS for us. In other cases, why not do it again? */
+ lis 6, (__bss_start - 4)@h
+ ori 6, 6, (__bss_start - 4)@l
+
+2: stb 2, 4(6)
+ addi 6, 6, 1
+ andi. 7, 6, 3
+ cmpi 0, 1, 7, 0
+ bne 2b
+
+ lis 7, (_end - 4)@h
+ ori 7, 7, (_end - 4)@l
+ subf 7, 6, 7
+ subi 8, 7, 1
+ andi. 8, 8, 3
+ addi 8, 8, 1
+ sub 7, 7, 8
+
+ srwi 7, 7, 2 /* We store 4 bytes at a time. */
+ mtctr 7
+2: stwu 2, 4(6) /* We know r2 is already 0 from above. */
+ bdnz 2b
+
+ mtctr 8
+2: stb 2, 4(6) /* We know r2 is already 0 from above. */
+ addi 6, 6, 1
+ bdnz 2b
+
+ /* Store r5 in grub_ieee1275_entry_fn. */
+ lis 9, grub_ieee1275_entry_fn@ha
+ stw 5, grub_ieee1275_entry_fn@l(9)
+
+ bl grub_main
+1: b 1b
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