powerpc: Move ppc64 boot wrapper code over to arch/powerpc

This also extends the code to handle 32-bit ELF vmlinux files as well
as 64-bit ones.  This is sufficient for booting on new-world 32-bit
powermacs (i.e. all recent machines).

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 149 insertions, 0 deletions

diff --git a/arch/powerpc/boot/elf.h b/arch/powerpc/boot/elf.h
new file mode 100644
index 000000000000..d4828fcf1cb9
--- /dev/null
+++ b/arch/powerpc/boot/elf.h
@@ -0,0 +1,149 @@
+#ifndef _PPC_BOOT_ELF_H_
+#define _PPC_BOOT_ELF_H_
+
+/* 32-bit ELF base types. */
+typedef unsigned int Elf32_Addr;
+typedef unsigned short Elf32_Half;
+typedef unsigned int Elf32_Off;
+typedef signed int Elf32_Sword;
+typedef unsigned int Elf32_Word;
+
+/* 64-bit ELF base types. */
+typedef unsigned long long Elf64_Addr;
+typedef unsigned short Elf64_Half;
+typedef signed short Elf64_SHalf;
+typedef unsigned long long Elf64_Off;
+typedef signed int Elf64_Sword;
+typedef unsigned int Elf64_Word;
+typedef unsigned long long Elf64_Xword;
+typedef signed long long Elf64_Sxword;
+
+/* These constants are for the segment types stored in the image headers */
+#define PT_NULL    0
+#define PT_LOAD    1
+#define PT_DYNAMIC 2
+#define PT_INTERP  3
+#define PT_NOTE    4
+#define PT_SHLIB   5
+#define PT_PHDR    6
+#define PT_TLS     7            /* Thread local storage segment */
+#define PT_LOOS    0x60000000   /* OS-specific */
+#define PT_HIOS    0x6fffffff   /* OS-specific */
+#define PT_LOPROC  0x70000000
+#define PT_HIPROC  0x7fffffff
+#define PT_GNU_EH_FRAME         0x6474e550
+
+#define PT_GNU_STACK    (PT_LOOS + 0x474e551)
+
+/* These constants define the different elf file types */
+#define ET_NONE   0
+#define ET_REL    1
+#define ET_EXEC   2
+#define ET_DYN    3
+#define ET_CORE   4
+#define ET_LOPROC 0xff00
+#define ET_HIPROC 0xffff
+
+/* These constants define the various ELF target machines */
+#define EM_NONE  0
+#define EM_PPC         20       /* PowerPC */
+#define EM_PPC64       21       /* PowerPC64 */
+
+#define EI_NIDENT       16
+
+typedef struct elf32_hdr {
+        unsigned char e_ident[EI_NIDENT];
+        Elf32_Half e_type;
+        Elf32_Half e_machine;
+        Elf32_Word e_version;
+        Elf32_Addr e_entry;     /* Entry point */
+        Elf32_Off e_phoff;
+        Elf32_Off e_shoff;
+        Elf32_Word e_flags;
+        Elf32_Half e_ehsize;
+        Elf32_Half e_phentsize;
+        Elf32_Half e_phnum;
+        Elf32_Half e_shentsize;
+        Elf32_Half e_shnum;
+        Elf32_Half e_shstrndx;
+} Elf32_Ehdr;
+
+typedef struct elf64_hdr {
+        unsigned char e_ident[16];      /* ELF "magic number" */
+        Elf64_Half e_type;
+        Elf64_Half e_machine;
+        Elf64_Word e_version;
+        Elf64_Addr e_entry;     /* Entry point virtual address */
+        Elf64_Off e_phoff;      /* Program header table file offset */
+        Elf64_Off e_shoff;      /* Section header table file offset */
+        Elf64_Word e_flags;
+        Elf64_Half e_ehsize;
+        Elf64_Half e_phentsize;
+        Elf64_Half e_phnum;
+        Elf64_Half e_shentsize;
+        Elf64_Half e_shnum;
+        Elf64_Half e_shstrndx;
+} Elf64_Ehdr;
+
+/* These constants define the permissions on sections in the program
+   header, p_flags. */
+#define PF_R            0x4
+#define PF_W            0x2
+#define PF_X            0x1
+
+typedef struct elf32_phdr {
+        Elf32_Word p_type;
+        Elf32_Off p_offset;
+        Elf32_Addr p_vaddr;
+        Elf32_Addr p_paddr;
+        Elf32_Word p_filesz;
+        Elf32_Word p_memsz;
+        Elf32_Word p_flags;
+        Elf32_Word p_align;
+} Elf32_Phdr;
+
+typedef struct elf64_phdr {
+        Elf64_Word p_type;
+        Elf64_Word p_flags;
+        Elf64_Off p_offset;     /* Segment file offset */
+        Elf64_Addr p_vaddr;     /* Segment virtual address */
+        Elf64_Addr p_paddr;     /* Segment physical address */
+        Elf64_Xword p_filesz;   /* Segment size in file */
+        Elf64_Xword p_memsz;    /* Segment size in memory */
+        Elf64_Xword p_align;    /* Segment alignment, file & memory */
+} Elf64_Phdr;
+
+#define EI_MAG0         0       /* e_ident[] indexes */
+#define EI_MAG1         1
+#define EI_MAG2         2
+#define EI_MAG3         3
+#define EI_CLASS        4
+#define EI_DATA         5
+#define EI_VERSION      6
+#define EI_OSABI        7
+#define EI_PAD          8
+
+#define ELFMAG0         0x7f    /* EI_MAG */
+#define ELFMAG1         'E'
+#define ELFMAG2         'L'
+#define ELFMAG3         'F'
+#define ELFMAG          "\177ELF"
+#define SELFMAG         4
+
+#define ELFCLASSNONE    0       /* EI_CLASS */
+#define ELFCLASS32      1
+#define ELFCLASS64      2
+#define ELFCLASSNUM     3
+
+#define ELFDATANONE     0       /* e_ident[EI_DATA] */
+#define ELFDATA2LSB     1
+#define ELFDATA2MSB     2
+
+#define EV_NONE         0       /* e_version, EI_VERSION */
+#define EV_CURRENT      1
+#define EV_NUM          2
+
+#define ELFOSABI_NONE   0
+#define ELFOSABI_LINUX  3
+
+#endif                          /* _PPC_BOOT_ELF_H_ */