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x86: Remove unused real mode code

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This code is pretty old and we want to support only 32-bit systems now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Graeme Russ <graeme.russ@gmail.com>
This commit is contained in:
Simon Glass
2013-02-14 17:38:30 +00:00
parent 588a13f742
commit 96dfc0633a
12 changed files with 0 additions and 1799 deletions
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23
arch/x86/lib/zimage.c
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@@ -33,7 +33,6 @@
#include <asm/io.h>
#include <asm/ptrace.h>
#include <asm/zimage.h>
#include <asm/realmode.h>
#include <asm/byteorder.h>
#include <asm/bootparam.h>
#ifdef CONFIG_SYS_COREBOOT
@@ -175,16 +174,9 @@ struct boot_params *load_zimage(char *image, unsigned long kernel_size,
else
*load_address = (void *)ZIMAGE_LOAD_ADDR;
#if (defined CONFIG_ZBOOT_32 || defined CONFIG_X86_NO_REAL_MODE)
printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base);
memset(setup_base, 0, sizeof(*setup_base));
setup_base->hdr = params->hdr;
#else
/* load setup */
printf("Moving Real-Mode Code to 0x%8.8lx (%d bytes)\n",
(ulong)setup_base, setup_size);
memmove(setup_base, image, setup_size);
#endif
if (bootproto >= 0x0204)
kernel_size = hdr->syssize * 16;
@@ -241,10 +233,8 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
struct setup_header *hdr = &setup_base->hdr;
int bootproto = get_boot_protocol(hdr);
#if (defined CONFIG_ZBOOT_32 || defined CONFIG_X86_NO_REAL_MODE)
setup_base->e820_entries = install_e820_map(
ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
#endif
if (bootproto == 0x0100) {
setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
@@ -300,7 +290,6 @@ void boot_zimage(void *setup_base, void *load_address)
#ifdef CONFIG_SYS_COREBOOT
timestamp_add_now(TS_U_BOOT_START_KERNEL);
#endif
#if defined CONFIG_ZBOOT_32
/*
* Set %ebx, %ebp, and %edi to 0, %esi to point to the boot_params
* structure, and then jump to the kernel. We assume that %cs is
@@ -317,18 +306,6 @@ void boot_zimage(void *setup_base, void *load_address)
"b"(0), "D"(0)
: "%ebp"
);
#else
struct pt_regs regs;
memset(&regs, 0, sizeof(struct pt_regs));
regs.xds = (u32)setup_base >> 4;
regs.xes = regs.xds;
regs.xss = regs.xds;
regs.esp = 0x9000;
regs.eflags = 0;
enter_realmode(((u32)setup_base + SETUP_START_OFFSET) >> 4, 0,
&regs, &regs);
#endif
}
void setup_pcat_compatibility(void)