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load_elf: replace the address addend by a translation function

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A few machines need to translate the ELF header addresses into physical
addresses. Currently the only possibility is to add a value to the
addresses.

This patch replaces the addend argument by and a translation function
and an opaque passed to the function. A NULL function does not translate
the address.

The patch also convert all machines that have an addend, simplify the
PowerPC kernel loading and fix the MIPS kernel loading using this new
feature. Other machines may benefit from this feature.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2010-03-14 21:20:59 +01:00
parent cb66ffcf9e
commit 409dbce54b
24 changed files with 159 additions and 101 deletions
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17
hw/mips_r4k.c
View file

@ -21,10 +21,6 @@
#include "loader.h"
#include "elf.h"
#define PHYS_TO_VIRT(x) ((x) | ~(target_ulong)0x7fffffff)
#define VIRT_TO_PHYS_ADDEND (-((int64_t)(int32_t)0x80000000))
#define MAX_IDE_BUS 2
static const int ide_iobase[2] = { 0x1f0, 0x170 };
@ -77,7 +73,7 @@ typedef struct ResetData {
static int64_t load_kernel(void)
{
int64_t entry, kernel_low, kernel_high;
int64_t entry, kernel_high;
long kernel_size, initrd_size, params_size;
ram_addr_t initrd_offset;
uint32_t *params_buf;
@ -88,9 +84,10 @@ static int64_t load_kernel(void)
#else
big_endian = 0;
#endif
kernel_size = load_elf(loaderparams.kernel_filename, VIRT_TO_PHYS_ADDEND,
(uint64_t *)&entry, (uint64_t *)&kernel_low,
(uint64_t *)&kernel_high, big_endian, ELF_MACHINE, 1);
kernel_size = load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys,
NULL, (uint64_t *)&entry, NULL,
(uint64_t *)&kernel_high, big_endian,
ELF_MACHINE, 1);
if (kernel_size >= 0) {
if ((entry & ~0x7fffffffULL) == 0x80000000)
entry = (int32_t)entry;
@ -132,8 +129,8 @@ static int64_t load_kernel(void)
params_buf[1] = tswap32(0x12345678);
if (initrd_size > 0) {
snprintf((char *)params_buf + 8, 256, "rd_start=0x" TARGET_FMT_lx " rd_size=%li %s",
PHYS_TO_VIRT((uint32_t)initrd_offset),
snprintf((char *)params_buf + 8, 256, "rd_start=0x%" PRIx64 " rd_size=%li %s",
cpu_mips_phys_to_kseg0(NULL, initrd_offset),
initrd_size, loaderparams.kernel_cmdline);
} else {
snprintf((char *)params_buf + 8, 256, "%s", loaderparams.kernel_cmdline);