summaryrefslogtreecommitdiff
path: root/arch/i386/cpu
diff options
context:
space:
mode:
Diffstat (limited to 'arch/i386/cpu')
-rw-r--r--arch/i386/cpu/cpu.c31
-rw-r--r--arch/i386/cpu/interrupts.c8
-rw-r--r--arch/i386/cpu/resetvec.S3
-rw-r--r--arch/i386/cpu/sc520/sc520.c8
-rw-r--r--arch/i386/cpu/sc520/sc520_car.S5
-rw-r--r--arch/i386/cpu/sc520/sc520_pci.c14
-rw-r--r--arch/i386/cpu/sc520/sc520_sdram.c4
-rw-r--r--arch/i386/cpu/sc520/sc520_ssi.c5
-rw-r--r--arch/i386/cpu/sc520/sc520_timer.c7
-rw-r--r--arch/i386/cpu/start.S28
-rw-r--r--arch/i386/cpu/start16.S6
11 files changed, 56 insertions, 63 deletions
diff --git a/arch/i386/cpu/cpu.c b/arch/i386/cpu/cpu.c
index 2339cd4..5ca0c91 100644
--- a/arch/i386/cpu/cpu.c
+++ b/arch/i386/cpu/cpu.c
@@ -1,6 +1,9 @@
/*
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
* (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
@@ -29,18 +32,16 @@
* MA 02111-1307 USA
*/
-/*
- * CPU specific code
- */
-
#include <common.h>
#include <command.h>
#include <asm/processor.h>
#include <asm/processor-flags.h>
#include <asm/interrupt.h>
-/* Constructor for a conventional segment GDT (or LDT) entry */
-/* This is a macro so it can be used in initializers */
+/*
+ * Constructor for a conventional segment GDT (or LDT) entry
+ * This is a macro so it can be used in initialisers
+ */
#define GDT_ENTRY(flags, base, limit) \
((((base) & 0xff000000ULL) << (56-24)) | \
(((flags) & 0x0000f0ffULL) << 40) | \
@@ -48,10 +49,6 @@
(((base) & 0x00ffffffULL) << 16) | \
(((limit) & 0x0000ffffULL)))
-/*
- * Set up the GDT
- */
-
struct gdt_ptr {
u16 len;
u32 ptr;
@@ -59,8 +56,10 @@ struct gdt_ptr {
static void reload_gdt(void)
{
- /* There are machines which are known to not boot with the GDT
- being 8-byte unaligned. Intel recommends 16 byte alignment. */
+ /*
+ * There are machines which are known to not boot with the GDT
+ * being 8-byte unaligned. Intel recommends 16 byte alignment
+ */
static const u64 boot_gdt[] __attribute__((aligned(16))) = {
/* CS: code, read/execute, 4 GB, base 0 */
[GDT_ENTRY_32BIT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff),
@@ -86,7 +85,6 @@ static void reload_gdt(void)
: : "m" (gdt) : "ecx");
}
-
int x86_cpu_init_f(void)
{
const u32 em_rst = ~X86_CR0_EM;
@@ -125,7 +123,9 @@ int cpu_init_r(void) __attribute__((weak, alias("x86_cpu_init_r")));
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
printf ("resetting ...\n");
- udelay(50000); /* wait 50 ms */
+
+ /* wait 50 ms */
+ udelay(50000);
disable_interrupts();
reset_cpu(0);
@@ -136,7 +136,6 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
void flush_cache (unsigned long dummy1, unsigned long dummy2)
{
asm("wbinvd\n");
- return;
}
void __attribute__ ((regparm(0))) generate_gpf(void);
diff --git a/arch/i386/cpu/interrupts.c b/arch/i386/cpu/interrupts.c
index 1cefe02..62bcadc 100644
--- a/arch/i386/cpu/interrupts.c
+++ b/arch/i386/cpu/interrupts.c
@@ -1,9 +1,9 @@
/*
- * (C) Copyright 2008
- * Graeme Russ, graeme.russ@gmail.com.
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
*
* (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* Portions of this file are derived from the Linux kernel source
* Copyright (C) 1991, 1992 Linus Torvalds
@@ -45,7 +45,7 @@
* read/write functions for the control registers and messing everything up.
* A memory clobber would solve the problem, but would prevent reordering of
* all loads stores around it, which can hurt performance. Solution is to
- * use a variable and mimic reads and writes to it to enforce serialization
+ * use a variable and mimic reads and writes to it to enforce serialisation
*/
static unsigned long __force_order;
diff --git a/arch/i386/cpu/resetvec.S b/arch/i386/cpu/resetvec.S
index d9222dd..27021bd 100644
--- a/arch/i386/cpu/resetvec.S
+++ b/arch/i386/cpu/resetvec.S
@@ -1,7 +1,8 @@
/*
* U-boot - i386 Startup Code
*
- * Copyright (c) 2002 Omicron Ceti AB, Daniel Engström <denaiel@omicron.se>
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* See file CREDITS for list of people who contributed to this
* project.
diff --git a/arch/i386/cpu/sc520/sc520.c b/arch/i386/cpu/sc520/sc520.c
index d0c313b..edc1a5c 100644
--- a/arch/i386/cpu/sc520/sc520.c
+++ b/arch/i386/cpu/sc520/sc520.c
@@ -1,6 +1,9 @@
/*
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
* (C) Copyright 2002
- * Daniel Engstr�m, Omicron Ceti AB <daniel@omicron.se>.
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -21,9 +24,6 @@
* MA 02111-1307 USA
*/
-/* stuff specific for the sc520,
- * but idependent of implementation */
-
#include <common.h>
#include <asm/io.h>
#include <asm/processor-flags.h>
diff --git a/arch/i386/cpu/sc520/sc520_car.S b/arch/i386/cpu/sc520/sc520_car.S
index 22f5225..a33f94f 100644
--- a/arch/i386/cpu/sc520/sc520_car.S
+++ b/arch/i386/cpu/sc520/sc520_car.S
@@ -1,6 +1,6 @@
/*
- * (C) Copyright 2010
- * Graeme Russ <graeme.russ@gmail.com>.
+ * (C) Copyright 2010-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -21,7 +21,6 @@
* MA 02111-1307 USA
*/
-
#include <config.h>
#include <asm/processor-flags.h>
#include <asm/ic/sc520.h>
diff --git a/arch/i386/cpu/sc520/sc520_pci.c b/arch/i386/cpu/sc520/sc520_pci.c
index b917734..8cd7ffe 100644
--- a/arch/i386/cpu/sc520/sc520_pci.c
+++ b/arch/i386/cpu/sc520/sc520_pci.c
@@ -1,6 +1,9 @@
/*
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
* (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB <daniel@omicron.se>.
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -21,8 +24,6 @@
* MA 02111-1307 USA
*/
-/* stuff specific for the sc520, but independent of implementation */
-
#include <common.h>
#include <pci.h>
#include <asm/io.h>
@@ -54,7 +55,6 @@ static struct {
{ SC520_IRQ15, 1, 0x80 }
};
-
/* The interrupt used for PCI INTA-INTD */
int sc520_pci_ints[15] = {
-1, -1, -1, -1, -1, -1, -1, -1,
@@ -68,9 +68,8 @@ int pci_sc520_set_irq(int pci_pin, int irq)
u8 tmpb;
u16 tmpw;
-# if 1
- printf("set_irq(): map INT%c to IRQ%d\n", pci_pin + 'A', irq);
-#endif
+ debug("set_irq(): map INT%c to IRQ%d\n", pci_pin + 'A', irq);
+
if (irq < 0 || irq > 15) {
return -1; /* illegal irq */
}
@@ -138,5 +137,4 @@ void pci_sc520_init(struct pci_controller *hose)
/* enable target memory acceses on host brige */
pci_write_config_word(0, PCI_COMMAND,
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
-
}
diff --git a/arch/i386/cpu/sc520/sc520_sdram.c b/arch/i386/cpu/sc520/sc520_sdram.c
index d5ab55d..f3623f5 100644
--- a/arch/i386/cpu/sc520/sc520_sdram.c
+++ b/arch/i386/cpu/sc520/sc520_sdram.c
@@ -1,6 +1,6 @@
/*
- * (C) Copyright 2010
- * Graeme Russ <graeme.russ@gmail.com>.
+ * (C) Copyright 2010,2011
+ * Graeme Russ, <graeme.russ@gmail.com>
*
* See file CREDITS for list of people who contributed to this
* project.
diff --git a/arch/i386/cpu/sc520/sc520_ssi.c b/arch/i386/cpu/sc520/sc520_ssi.c
index 6e5e346..ac58d25 100644
--- a/arch/i386/cpu/sc520/sc520_ssi.c
+++ b/arch/i386/cpu/sc520/sc520_ssi.c
@@ -1,6 +1,6 @@
/*
* (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB <daniel@omicron.se>.
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -21,8 +21,6 @@
* MA 02111-1307 USA
*/
-/* stuff specific for the sc520, but independent of implementation */
-
#include <common.h>
#include <asm/io.h>
#include <asm/ic/ssi.h>
@@ -77,7 +75,6 @@ u8 ssi_txrx_byte(u8 data)
return readb(&sc520_mmcr->ssircv);
}
-
void ssi_tx_byte(u8 data)
{
writeb(data, &sc520_mmcr->ssixmit);
diff --git a/arch/i386/cpu/sc520/sc520_timer.c b/arch/i386/cpu/sc520/sc520_timer.c
index d5617e9..1bcfe67 100644
--- a/arch/i386/cpu/sc520/sc520_timer.c
+++ b/arch/i386/cpu/sc520/sc520_timer.c
@@ -1,6 +1,9 @@
/*
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
* (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB <daniel@omicron.se>.
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -21,8 +24,6 @@
* MA 02111-1307 USA
*/
-/* stuff specific for the sc520, but independent of implementation */
-
#include <common.h>
#include <asm/io.h>
#include <asm/interrupt.h>
diff --git a/arch/i386/cpu/start.S b/arch/i386/cpu/start.S
index 0031389..2124a42 100644
--- a/arch/i386/cpu/start.S
+++ b/arch/i386/cpu/start.S
@@ -1,7 +1,11 @@
/*
* U-boot - i386 Startup Code
*
- * Copyright (c) 2002 Omicron Ceti AB, Daniel Engström <denaiel@omicron.se>
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -22,13 +26,11 @@
* MA 02111-1307 USA
*/
-
#include <config.h>
#include <version.h>
#include <asm/global_data.h>
#include <asm/processor-flags.h>
-
.section .text
.code32
.globl _start
@@ -56,8 +58,8 @@ _i386boot_start:
_start:
/* This is the 32-bit cold-reset entry point */
- movl $0x18, %eax /* Load our segement registes, the
- * gdt have already been loaded by start16.S */
+ /* Load the segement registes to match the gdt loaded in start16.S */
+ movl $0x18, %eax
movw %ax, %fs
movw %ax, %ds
movw %ax, %gs
@@ -82,21 +84,13 @@ car_init_ret:
* starting at CONFIG_SYS_CAR_ADDR to be used as a temporary stack
*/
movl $CONFIG_SYS_INIT_SP_ADDR, %esp
- movl $CONFIG_SYS_INIT_GD_ADDR, %ebp
-
- /* Set Boot Flags in Global Data */
- movl %ebx, (GD_FLAGS * 4)(%ebp)
-
- /* Determine our load offset (and put in Global Data) */
- call 1f
-1: popl %ecx
- subl $1b, %ecx
- movl %ecx, (GD_LOAD_OFF * 4)(%ebp)
/* Set parameter to board_init_f() to boot flags */
- movl (GD_FLAGS * 4)(%ebp), %eax
+ xorl %eax, %eax
+ movw %bx, %ax
- call board_init_f /* Enter, U-boot! */
+ /* Enter, U-boot! */
+ call board_init_f
/* indicate (lack of) progress */
movw $0x85, %ax
diff --git a/arch/i386/cpu/start16.S b/arch/i386/cpu/start16.S
index 7dc5358..d2e5d13 100644
--- a/arch/i386/cpu/start16.S
+++ b/arch/i386/cpu/start16.S
@@ -1,7 +1,11 @@
/*
* U-boot - i386 Startup Code
*
- * Copyright (c) 2002, 2003 Omicron Ceti AB, Daniel Engström <denaiel@omicron.se>
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * (C) Copyright 2002,2003
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* See file CREDITS for list of people who contributed to this
* project.
generated by cgit v1.1 at 2024-12-25 13:08:21 +0000