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RedBoot: add a -t (target address) option to the ARM exec command
- From: David Vrabel <dvrabel at arcom dot com>
- To: eCos Patches <ecos-patches at ecos dot sourceware dot org>
- Date: Thu, 21 Apr 2005 14:59:09 +0100
- Subject: RedBoot: add a -t (target address) option to the ARM exec command
Hi,
The patch adds a -t option to the RedBoot exec command (on ARM only).
This option is used to specify the the final (physical) target address
to copy the image to. It defaults to the current hardcoded default of
CYGHWR_REDBOOT_ARM_LINUX_EXEC_ADDRESS. It's useful for booting
non-Linux OSes.
David Vrabel
--
David Vrabel, Design Engineer
Arcom, Clifton Road Tel: +44 (0)1223 411200 ext. 3233
Cambridge CB1 7EA, UK Web: http://www.arcom.com/
%status
pending
%patch
Index: packages/hal/arm/arch/current/ChangeLog
===================================================================
--- packages/hal/arm/arch/current/ChangeLog.orig 2005-04-21 14:44:44.000000000 +0100
+++ packages/hal/arm/arch/current/ChangeLog 2005-04-21 14:47:25.000000000 +0100
@@ -1,3 +1,9 @@
+2005-04-21 Ian Campbell <icampbell@arcom.com>
+
+ * src/redboot_linux_exec.c: Added -t option which takes the
+ physical address to copy to. Very useful for booting non-Linux
+ operating systems.
+
2005-03-03 Andrew Lunn <andrew.lunn@ascom.ch>
* src/redboot_linux_exec.c (CYGARC_HAL_MMU_OFF_X): Fix compiler
Index: packages/hal/arm/arch/current/src/redboot_linux_exec.c
===================================================================
--- packages/hal/arm/arch/current/src/redboot_linux_exec.c.orig 2005-04-21 14:44:44.000000000 +0100
+++ packages/hal/arm/arch/current/src/redboot_linux_exec.c 2005-04-21 14:48:07.000000000 +0100
@@ -92,7 +92,7 @@
"Execute an image - with MMU off",
"[-w timeout] [-b <load addr> [-l <length>]]\n"
" [-r <ramdisk addr> [-s <ramdisk length>]]\n"
- " [-c \"kernel command line\"] [<entry_point>]",
+ " [-c \"kernel command line\"] [-t <target> ] [<entry_point>]",
do_exec
);
@@ -307,6 +307,7 @@
do_exec(int argc, char *argv[])
{
unsigned long entry;
+ unsigned long target;
unsigned long oldints;
bool wait_time_set;
int wait_time, res, num_opts;
@@ -331,6 +332,7 @@
}
// Default physical entry point for Linux is kernel base.
entry = (unsigned long)CYGHWR_REDBOOT_ARM_LINUX_EXEC_ADDRESS;
+ target = (unsigned long)CYGHWR_REDBOOT_ARM_LINUX_EXEC_ADDRESS;
base_addr = load_address;
length = load_address_end - load_address;
@@ -350,9 +352,11 @@
(void **)&ramdisk_addr, (bool *)&ramdisk_addr_set, "ramdisk_addr");
init_opts(&opts[5], 's', true, OPTION_ARG_TYPE_NUM,
(void **)&ramdisk_size, (bool *)&ramdisk_size_set, "ramdisk_size");
- num_opts = 6;
+ init_opts(&opts[6], 't', true, OPTION_ARG_TYPE_NUM,
+ &target, 0, "[physical] target address");
+ num_opts = 7;
#ifdef CYGHWR_REDBOOT_LINUX_EXEC_X_SWITCH
- init_opts(&opts[6], 'x', false, OPTION_ARG_TYPE_FLG,
+ init_opts(&opts[num_opts], 'x', false, OPTION_ARG_TYPE_FLG,
(void **)&swap_endian, 0, "swap endianess");
++num_opts;
#endif
@@ -398,8 +402,8 @@
unsigned char *hold_script = script;
script = (unsigned char *)0;
#endif
- diag_printf("About to start execution at %p - abort with ^C within %d seconds\n",
- (void *)entry, wait_time);
+ diag_printf("About to start execution of image at %p, entry point %p - abort with ^C within %d seconds\n",
+ (void *)target, (void *)entry, wait_time);
while (script_timeout_ms >= CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT) {
res = _rb_gets(line, sizeof(line), CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT);
if (res == _GETS_CTRLC) {
@@ -514,7 +518,7 @@
"r"(CYGARC_PHYSICAL_ADDRESS(base_addr)),
"r"(length),
"r"(CYGHWR_REDBOOT_ARM_MACHINE_TYPE),
- "r"(CYGHWR_REDBOOT_ARM_LINUX_EXEC_ADDRESS),
+ "r"(target),
"r"(CYGARC_PHYSICAL_ADDRESS(CYGHWR_REDBOOT_ARM_TRAMPOLINE_ADDRESS)),
"r"(CYGARC_PHYSICAL_ADDRESS(CYGHWR_REDBOOT_ARM_LINUX_TAGS_ADDRESS))
: "r0", "r1"