X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Fx86%2Flib%2Fzimage.c;h=1dab3cc78878dcea322d1685f0df0ed388f7a70c;hb=254d68b6011c33af189d006243920c296592fca7;hp=22142864c22c052efd5626f26fc3ab04dfb1b630;hpb=7dda0c3759c6ee190d44b8ceaeab58047cb9a957;p=u-boot

diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c
index 22142864c2..1dab3cc788 100644
--- a/arch/x86/lib/zimage.c
+++ b/arch/x86/lib/zimage.c
@@ -3,23 +3,7 @@
  * (C) Copyright 2002
  * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program 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 2 of
- * the License, or (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
@@ -33,9 +17,12 @@
 #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
+#include <asm/arch/timestamp.h>
+#endif
+#include <linux/compiler.h>
 
 /*
  * Memory lay-out:
@@ -171,16 +158,9 @@ struct boot_params *load_zimage(char *image, unsigned long kernel_size,
 	else
 		*load_address = (void *)ZIMAGE_LOAD_ADDR;
 
-#if defined CONFIG_ZBOOT_32
 	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;
@@ -237,10 +217,8 @@ 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
 	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;
@@ -279,11 +257,30 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
 	return 0;
 }
 
+/*
+ * Implement a weak default function for boards that optionally
+ * need to clean up the system before jumping to the kernel.
+ */
+__weak void board_final_cleanup(void)
+{
+}
+
 void boot_zimage(void *setup_base, void *load_address)
 {
+	debug("## Transferring control to Linux (at address %08x) ...\n",
+	      (u32)setup_base);
+
+	bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
+#ifdef CONFIG_BOOTSTAGE_REPORT
+	bootstage_report();
+#endif
+	board_final_cleanup();
+
 	printf("\nStarting kernel ...\n\n");
 
-#if defined CONFIG_ZBOOT_32
+#ifdef CONFIG_SYS_COREBOOT
+	timestamp_add_now(TS_U_BOOT_START_KERNEL);
+#endif
 	/*
 	 * 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
@@ -292,26 +289,14 @@ void boot_zimage(void *setup_base, void *load_address)
 	 * itself in arch/i386/cpu/cpu.c.
 	 */
 	__asm__ __volatile__ (
-	"movl $0, %%ebp		\n"
-	"cli			\n"
-	"jmp %[kernel_entry]	\n"
+	"movl $0, %%ebp\n"
+	"cli\n"
+	"jmp *%[kernel_entry]\n"
 	:: [kernel_entry]"a"(load_address),
 	   [boot_params] "S"(setup_base),
 	   "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)
@@ -369,10 +354,6 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 		return -1;
 	}
 
-	printf("## Transferring control to Linux "
-	       "(at address %08x) ...\n",
-	       (u32)base_ptr);
-
 	/* we assume that the kernel is in place */
 	boot_zimage(base_ptr, load_address);
 	/* does not return */