On Fri, 25 Feb 2000, �麴�� wrote:
> 1) How can I load arm linux kernel using serial at CFG> prompt ?
>
> EBSA285 manual boot
> 1- Boot Method : serial
> 2- Image Number : 2
> 3- Root device : 0000
> 4- Argument :
> b-boot p- pci config
> CFG>
Apply the attached patch against bios-1.06. It fixes the serial code plus
other minor things.
> 2) Is there anyone who success to load kernel using DEC21143 ?
> Or... DEC21143 Ethernet driver is supported ..?
Never tried.
> 3) When I booted using bios-1.06, My ebsa282 hanged at pci_read_config_word().
> Who has the same experience ?
It certainly won't help for your DEC21143 to work.
Nicolas
diff -urN 1.06/bios/Changes bios/Changes
--- 1.06/bios/Changes Sun Nov 28 16:14:50 1999
+++ bios/Changes Thu Feb 24 10:43:46 2000
@@ -10,3 +10,11 @@
Nicolas Pitre <[EMAIL PROTECTED]>
- added y-modem upload boot method
+
+Changes to 1.06:
+ Nicolas Pitre <[EMAIL PROTECTED]>
+ - fixed y-modem code
+ - fixed linker script (.bss wasn't fully initialized)
+ - added flash image boot method
+
+
diff -urN 1.06/bios/Makefile bios/Makefile
--- 1.06/bios/Makefile Sat Nov 20 09:49:50 1999
+++ bios/Makefile Thu Feb 24 10:40:49 2000
@@ -1,7 +1,11 @@
.EXPORT_ALL_VARIABLES:
-#TEXTADDR =0x411000a0
+# This is for the bios to be launched from a flash bank by angel (with FMU?).
TEXTADDR =0x411000c0
+
+# This is for the ultimate boot instance... with nothing else.
+#TEXTADDR =0x41000080
+
DATAADDR =0x1000
CROSS_COMPILE =arm-linux-
diff -urN 1.06/bios/drivers/char/Makefile bios/drivers/char/Makefile
--- 1.06/bios/drivers/char/Makefile Sun Nov 28 16:15:20 1999
+++ bios/drivers/char/Makefile Tue Jan 25 16:20:41 2000
@@ -1,5 +1,5 @@
L_TARGET := char.a
-L_OBJS := vga.o ry.o
+L_OBJS := vga.o ry.o flash.o
include $(TOPDIR)/Rules.make
diff -urN 1.06/bios/drivers/char/flash.c bios/drivers/char/flash.c
--- 1.06/bios/drivers/char/flash.c Wed Dec 31 19:00:00 1969
+++ bios/drivers/char/flash.c Wed Jan 26 15:07:56 2000
@@ -0,0 +1,78 @@
+/*
+ * flash.c : boot method for booting a kernel directly from flash
+ * (C) 2000 Nicolas Pitre <[EMAIL PROTECTED]>
+ *
+ * This code boots the kernel directly from flash. For this to work,
+ * some parameters must be set in linux/arch/arm/boot/compressed/Makefile
+ * for the CONFIG_FOOTBRIDGE section as follows:
+ *
+ * ZTEXTADDR = (value of KERNEL_IMG_ADDR below)
+ * ZRELADDR = 0x00008000
+ * ZBSSADDR = 0x00200000
+ *
+ * Also you must ensure your zImage doesn't contain any variable data
+ * section. For this run:
+ *
+ * size linux/arch/arm/boot/compressed/vmlinux
+ *
+ * after compiling. Note: you might need to use 'arm-linux-size' instead if
+ * you are cross-compiling. You must get an output like this:
+ *
+ * text data bss dec hex filename
+ * 484696 0 33848 518544 7e990 arch/arm/boot/compressed/vmlinux
+ *
+ * Here 'data' must be 0. If you have an older kernel source tree than 2.3.x,
+ * you might need to use a patched linux/lib/inflate.c (simply copying the
+ * one from a 2.3.x source tree should do).
+ *
+ * Finally the kernel's zImage must be flashed at KERNEL_IMG_ADDR.
+ */
+
+#include <bios/boot.h>
+#include <bios/bootdev.h>
+#include <bios/stdio.h>
+
+
+#define KERNEL_IMG_ADDR (0x41000000 + 64*1024)
+#define MAGIC_SIG 0x016f2818 /* in arch/arm/boot/compressed/head.S */
+
+
+static int flash_probe( void )
+{
+ long *ptr = (long *)KERNEL_IMG_ADDR;
+
+ /*
+ * Check for zImage signature and if it can be executed in place.
+ * Those values are found in linux/arch/arm/boot/compressed/head.S
+ */
+ if( ptr[9] != MAGIC_SIG ) return -1;
+ if( ptr[10] != (long)ptr ) {
+ /* see comments at the beginning of this file */
+ printf( "\nWrong ZTEXTADDR for zImage in flash at %p\n", ptr );
+ return -1;
+ }
+ return 0;
+}
+
+
+static int flash_load( void )
+{
+ load_addr = KERNEL_IMG_ADDR;
+ return 0;
+}
+
+
+static int flash_dummy( void )
+{
+ return 0;
+}
+
+
+struct bootdev boot_flash = {
+ "flash image",
+ flash_probe,
+ flash_probe, /* start */
+ flash_load,
+ flash_dummy /* stop */
+};
+
diff -urN 1.06/bios/drivers/char/ry.c bios/drivers/char/ry.c
--- 1.06/bios/drivers/char/ry.c Sun Nov 28 16:16:51 1999
+++ bios/drivers/char/ry.c Tue Jan 25 17:24:53 2000
@@ -41,7 +41,7 @@
static void tx( int c )
{
- while (*((volatile int *)(SERBASE + 0x18)) & 8);
+ while (*((volatile int *)(SERBASE + 0x18)) & (1<<5));
*((volatile int *)(SERBASE)) = c;
}
@@ -51,9 +51,9 @@
unsigned int expire = centisecs + timeout * 100;
while( centisecs <= expire ){
- if ( ! *((volatile unsigned int *)(SERBASE + 0x18)) & 16) {
+ if ( ! (*((volatile int *)(SERBASE + 0x18)) & (1<<4)) ) {
c = *((volatile int *)(SERBASE));
- return c;
+ return c & 0xff;
}
}
return TIMEOUT;
@@ -193,10 +193,11 @@
{
int res;
- printf ("Now send file with ymodem...\n" );
+ printf( "\nNow send file with y-modem (^X to abort) ...\n" );
pout = (unsigned long *)load_addr;
res = wcreceive();
- printf( "Transfer %s, press any key.\n",
+ wait_cs( 50 );
+ printf( "\n\nTransfer %s, press any key.\n",
(res == OK) ? "complete" : "failed" );
getc();
return res;
@@ -208,7 +209,7 @@
}
struct bootdev boot_serial = {
- "serial",
+ "serial port",
serial_dummy,
serial_dummy,
serial_load,
diff -urN 1.06/bios/elfbios.lds bios/elfbios.lds
--- 1.06/bios/elfbios.lds Sun Nov 28 16:22:12 1999
+++ bios/elfbios.lds Wed Jan 26 16:09:52 2000
@@ -11,19 +11,19 @@
*(.gnu.warning)
*(.rodata)
. = ALIGN(4);
- _etext = .; /* End of text section */
}
+ _etext = .; /* End of text section */
.data : { /* Data */
_data = .;
*(.data)
- _edata = .; /* End of data section */
}
+ _edata = .; /* End of data section */
_data_sz = SIZEOF(.data);
.bss : {
_bss_start = .; /* BSS */
*(.bss)
- _end = . ;
}
+ _end = .;
}
diff -urN 1.06/bios/include/bios/config.h bios/include/bios/config.h
--- 1.06/bios/include/bios/config.h Sun Oct 4 09:51:14 1998
+++ bios/include/bios/config.h Tue Jan 25 16:25:34 2000
@@ -25,17 +25,22 @@
/* Define this if you wish your machine to have the capability of booting
* using an image stored on another machine via a TCP/IP network.
*/
#define CONFIG_BOOT_NET
/* Define this if you wish your machine to have the capability of booting
* from an IDE hard disk.
*/
#define CONFIG_BOOT_IDE
/* Define this if you wish your machine to have the capability of booting
* from a SCSI hard disk.
*/
#undef CONFIG_BOOT_SCSI
+
+/* Define this if you wish your machine to have the capability of booting
+ * with a kernel image directly from Flash.
+ */
+#define CONFIG_BOOT_FLASH
/*============================================================================
* Network Configuration
diff -urN 1.06/bios/init/crt0.S bios/init/crt0.S
--- 1.06/bios/init/crt0.S Sun Nov 28 16:16:51 1999
+++ bios/init/crt0.S Thu Jan 27 16:39:10 2000
@@ -128,11 +128,6 @@
* Detect RAM multiplexer settings
*/
- mov r0, r4
- bl ser_printhex
- mov r0, #':'
- bl ser_printc
-
mov r0, r4 @ check for presence
add r1, r4, #64
bl testram
@@ -152,11 +147,6 @@
orr r1, r0, #1 << 22
bl testram
orreq r5, r5, #1
-
- mov r0, r5
- bl ser_printhex
- mov r0, #'\n'
- bl ser_printc
adr r1, ram_modes @ convert test -> mux
ldrb r6, [r1, r5]
diff -urN 1.06/bios/init/main.c bios/init/main.c
--- 1.06/bios/init/main.c Sun Nov 28 16:32:52 1999
+++ bios/init/main.c Thu Jan 27 19:05:31 2000
@@ -25,6 +25,7 @@
extern struct bootdev boot_net;
extern struct bootdev boot_ide;
extern struct bootdev boot_scsi;
+extern struct bootdev boot_flash;
extern struct bootdev boot_serial;
static struct bootdev *first;
@@ -38,6 +39,9 @@
#ifdef CONFIG_BOOT_NET
&boot_net,
#endif
+#ifdef CONFIG_BOOT_FLASH
+ &boot_flash,
+#endif
&boot_serial,
NULL
};
@@ -172,8 +181,9 @@
bd = first;
break;
case '2':
img_nr = (img_nr + 1) & 3;
+ break;
case '3':
{
