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Allow mips user to override memory size

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This commit is contained in:
Michael Meissner 2002-02-01 17:22:59 +00:00
parent d49d4a33da
commit 2c8d73598c
2 changed files with 15 additions and 1 deletions
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6
libgloss/ChangeLog
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@ -1,3 +1,9 @@
2002-02-01 Michael Meissner <meissner@redhat.com>
* mips/cma101.c (__sizemem_default): Allow user to specify the
memory size.
(__sizemem): Use it.
2002-01-24 Mark Salter <msalter@redhat.com> 2002-01-24 Mark Salter <msalter@redhat.com>
* arm/redboot-crt0.S: Use __get_memtop to put stack in high memory. * arm/redboot-crt0.S: Use __get_memtop to put stack in high memory.

10
libgloss/mips/cma101.c
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@ -1,7 +1,7 @@
/* /*
* cma101.c -- lo-level support for Cogent CMA101 development board. * cma101.c -- lo-level support for Cogent CMA101 development board.
* *
* Copyright (c) 1996, 2001 Cygnus Support * Copyright (c) 1996, 2001, 2002 Cygnus Support
* *
* The authors hereby grant permission to use, copy, modify, distribute, * The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided * and license this software and its documentation for any purpose, provided
@ -179,6 +179,9 @@ extern unsigned int __buserr_count(void);
extern void __default_buserr_handler(void); extern void __default_buserr_handler(void);
extern void __restore_buserr_handler(void); extern void __restore_buserr_handler(void);
/* Allow the user to provide his/her own defaults. */
unsigned int __sizemem_default;
unsigned int unsigned int
__sizemem () __sizemem ()
{ {
@ -190,6 +193,11 @@ __sizemem ()
char *endptr = (char *)&end; char *endptr = (char *)&end;
int extra; int extra;
/* If the linker script provided a value for the memory size (or the user
overrode it in a debugger), use that. */
if (__sizemem_default)
return __sizemem_default;
/* If we are running in kernel segment 0 (possibly cached), try sizing memory /* If we are running in kernel segment 0 (possibly cached), try sizing memory
in kernel segment 1 (uncached) to avoid some problems with monitors. */ in kernel segment 1 (uncached) to avoid some problems with monitors. */
if (endptr >= K0BASE_ADDR && endptr < K1BASE_ADDR) if (endptr >= K0BASE_ADDR && endptr < K1BASE_ADDR)