len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-08 12:45:26 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

as3525*: enable MMU in bootloader

Browse source 
Reserve 1MB of DRAM for loading rockbox and use the rest as BSS
Write sdram setup in assembler and move it to a separate file, together
with MMU init code

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26926 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rafaël Carré 2010-06-18 17:33:51 +00:00
parent 6e5330f663
commit fd715fa95c
12 changed files with 200 additions and 198 deletions
Download patch file Download diff file Expand all files Collapse all files

28
firmware/target/arm/as3525/boot.lds
View file

@ -6,39 +6,31 @@ OUTPUT_FORMAT(elf32-littlearm)
OUTPUT_ARCH(arm)
STARTUP(target/arm/crt0.o)
#ifdef SANSA_CLIPV2
#define RAMORIG 0x0 /* DRAM */
#define RAMSIZE (MEM*0x100000)
#else
#define RAMORIG 0x81000000 /* IRAM */
#define RAMSIZE 0x50000
#endif
#define LOAD_SIZE 0x100000 /* Reserve 1MB for loading the firmware */
MEMORY
{
RAM : ORIGIN = RAMORIG, LENGTH = RAMSIZE
IRAM : ORIGIN = IRAM_ORIG, LENGTH = IRAM_SIZE
DRAM : ORIGIN = DRAM_ORIG + LOAD_SIZE, LENGTH = DRAM_SIZE - LOAD_SIZE - TTB_SIZE
}
SECTIONS
{
. = RAMORIG;
. = IRAM_ORIG;
.text : {
*(.init.text)
*(.glue_7)
*(.glue_7t)
*(.text*)
} > RAM
*(.icode)
} > IRAM
.data : {
*(.icode)
*(.irodata)
*(.idata)
*(.data*)
*(.ncdata*)
*(.rodata*)
_dataend = . ;
} > RAM
} > IRAM
.stack (NOLOAD) :
{
@ -48,14 +40,12 @@ SECTIONS
. += 0x2000;
_stackend = .;
stackend = .;
} > RAM
} > IRAM
.bss (NOLOAD) : {
_edata = .;
*(.bss*);
*(.ibss);
*(COMMON)
*(.ncbss*);
_end = .;
} > RAM
} > DRAM
}