diff options
Diffstat (limited to 'libgloss/mips/cfe.c')
| -rw-r--r-- | libgloss/mips/cfe.c | 88 |
1 files changed, 28 insertions, 60 deletions
diff --git a/libgloss/mips/cfe.c b/libgloss/mips/cfe.c index 0b0865eae..c1d8af559 100644 --- a/libgloss/mips/cfe.c +++ b/libgloss/mips/cfe.c @@ -1,7 +1,7 @@ /* cfe.c -- I/O code for the MIPS boards running CFE. */ /* - * Copyright 2001, 2002 + * Copyright 2001, 2002, 2003 * Broadcom Corporation. All rights reserved. * * This software is furnished under license and may be used and copied only @@ -32,37 +32,40 @@ #include "cfe_api.h" +void *__libcfe_init (long handle, long a1, long cfe_entrypoint, long a3); +void __libcfe_exit (long status); + char inbyte (void); int outbyte (char c); -/* Make sure cfe_prestart is used. It doesn't look like setting the - entry symbol in the linker script to a symbol from that fiel will do - this! */ -extern int _prestart; -static void *force_prestart = &_prestart; - -/* The following variables are initialized to non-zero so that they'll be - in data, rather than BSS. Used to be that you could init variables to - any value to put them into initialized data sections rather than BSS, - but that decades-old idiom went out the window with gcc 3.2. Now, - either you compile specially (with -fno-zero-initialized-in-bss), or - you init to non-zero. In this case, initting to non-zero is OK (and - even beneficial; alignment fault via jump to odd if not properly - set up by _prestart()), so we do the latter. - - These variables are 'int's so they can be reliably stored w/ "sw". - (longs fall victim to -mlong64.) They are signed so that they remain - valid pointers when extended to cfe_xuint_t in the call to cfe_init(). - This assumes that they are compatibility-space pointers. */ -int __cfe_handle = 0xdeadbeef; -int __cfe_entrypt = 0xdeadbeef; - /* Echo input characters? */ -int __cfe_echo_input = 0; +int __libcfe_echo_input = 0; /* CFE handle used to access console device. */ static int cfe_conshandle; + +/* Initialize firmware callbacks. Called from crt0_cfe. Returns desired + stack pointer. */ +void * +__libcfe_init (long handle, long a1, long entrypoint, long a3) +{ + cfe_init (handle, entrypoint); + cfe_conshandle = cfe_getstdhandle (CFE_STDHANDLE_CONSOLE); + + __libcfe_meminit (); + return __libcfe_stack_top (); +} + +/* Exit back to monitor, with the given status code. */ +void +__libcfe_exit (long status) +{ + outbyte ('\r'); + outbyte ('\n'); + cfe_exit (CFE_FLG_WARMSTART, status); +} + char inbyte (void) { @@ -73,7 +76,7 @@ inbyte (void) ; if (c == '\r') c = '\n'; - if (__cfe_echo_input) + if (__libcfe_echo_input) outbyte (c); return c; } @@ -93,41 +96,6 @@ outbyte (char c) return 0; } -/* Initialize hardware. Called from crt0. */ -void -hardware_init_hook(void) -{ - cfe_init (__cfe_handle, __cfe_entrypt); - cfe_conshandle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE); -} - -/* Exit back to monitor, with the given status code. */ -void -hardware_exit_hook (int status) -{ - outbyte ('\r'); - outbyte ('\n'); - cfe_exit (CFE_FLG_WARMSTART, status); -} - -/* Structure filled in by get_mem_info. Only the size field is - actually used (by sbrk), so the others aren't even filled in. */ -struct s_mem -{ - unsigned int size; - unsigned int icsize; - unsigned int dcsize; -}; - -void -get_mem_info (mem) - struct s_mem *mem; -{ - /* XXX FIXME: Fake this for now. Should invoke cfe_enummem, but we - don't have enough stack to do that (yet). */ - mem->size = 0x4000000; /* Assume 64 MB of RAM */ -} - /* This is the MIPS cache flush function call. No defines are provided by libgloss for 'cache', and CFE doesn't let you flush ranges, so we just flush all I & D for every call. */ |