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| author | Michael Sevakis <jethead71@rockbox.org> | 2008-04-06 04:34:57 +0000 |
|---|---|---|
| committer | Michael Sevakis <jethead71@rockbox.org> | 2008-04-06 04:34:57 +0000 |
| commit | 05099149f193cac0c81b0129c17feb78b1a9681a (patch) | |
| tree | 3dd5494dd494bcb4490ddcedef99e9f3a895cd3f /apps/plugins/plugin.lds | |
| parent | be698f086de4641a45dffd9289671588c2391a3c (diff) | |
| download | rockbox-05099149f193cac0c81b0129c17feb78b1a9681a.zip rockbox-05099149f193cac0c81b0129c17feb78b1a9681a.tar.gz rockbox-05099149f193cac0c81b0129c17feb78b1a9681a.tar.bz2 rockbox-05099149f193cac0c81b0129c17feb78b1a9681a.tar.xz | |
Enable nocache sections using the linker. PP5022/4 must use SW_CORELOCK now with shared variables in DRAM (it seems swp(b) is at least partially broken on all PP or I'm doing something very wrong here :\). For core-shared data use SHAREDBSS/DATA_ATTR. NOCACHEBSS/DATA_ATTR is available whether or not single core is forced for static peripheral-DMA buffer allocation without use of the UNCACHED_ADDR macro in code and is likely useful on a non-PP target with a data cache (although not actually enabled in config.h and the .lds's in this commit).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16981 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/plugins/plugin.lds')
| -rw-r--r-- | apps/plugins/plugin.lds | 47 |
1 files changed, 43 insertions, 4 deletions
diff --git a/apps/plugins/plugin.lds b/apps/plugins/plugin.lds index 9659412..8699ca1 100644 --- a/apps/plugins/plugin.lds +++ b/apps/plugins/plugin.lds @@ -16,6 +16,20 @@ OUTPUT_FORMAT(elf32-sh) #define STUBOFFSET 0 #endif +#if defined(CPU_PP) +#ifdef CPU_PP502x +#define NOCACHE_BASE 0x10000000 +#else +#define NOCACHE_BASE 0x28000000 +#endif /* CPU_* */ +#define CACHEALIGN_SIZE 16 +#endif /* CPU_PP */ + +#ifndef NOCACHE_BASE +/* Default to no offset if target doesn't define this */ +#define NOCACHE_BASE 0x00000000 +#endif + #if CONFIG_CPU==S3C2440 #include "s3c2440.h" #define DRAMSIZE (MEMORYSIZE * 0x100000) - 0x100 - PLUGIN_BUFFER_SIZE - STUBOFFSET - CODEC_SIZE - LCD_BUFFER_SIZE - TTB_SIZE @@ -119,10 +133,20 @@ SECTIONS .data : { *(.data*) + } > PLUGIN_RAM + +#if NOCACHE_BASE != 0 + .ncdata . + NOCACHE_BASE : + { + . = ALIGN(CACHEALIGN_SIZE); + *(.ncdata*) + . = ALIGN(CACHEALIGN_SIZE); + } AT> PLUGIN_RAM +#endif + #if defined(IRAMSIZE) - iramcopy = .; + iramcopy = . - NOCACHE_BASE; #endif - } > PLUGIN_RAM /DISCARD/ : { @@ -139,6 +163,7 @@ SECTIONS iramend = .; } > PLUGIN_IRAM + .ibss (NOLOAD) : { iedata = .; @@ -150,13 +175,27 @@ SECTIONS .bss (NOLOAD) : { - plugin_bss_start = .; + plugin_bss_start = .; *(.bss*) *(COMMON) . = ALIGN(0x4); + } > PLUGIN_RAM + +#if NOCACHE_BASE != 0 + .ncbss . + NOCACHE_BASE (NOLOAD) : + { + . = ALIGN(CACHEALIGN_SIZE); + *(.ncbss*) + . = ALIGN(CACHEALIGN_SIZE); + } AT> PLUGIN_RAM +#endif + + /* Restore . */ + .pluginend . - NOCACHE_BASE : + { _plugin_end_addr = .; plugin_end_addr = .; - } > PLUGIN_RAM + } /* Special trick to avoid a linker error when no other sections are left after garbage collection (plugin not for this platform) */ |