leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Blackfin: kill off LDR jump block

Browse Source 
The Boot ROM uses EVT1 as the entry point so set that rather than having
to use a tiny jump block in the default EVT1 location.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2008-10-18 04:04:49 -04:00
parent a75fa148d6
commit 7e1d212b6d
7 changed files with 14 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
blackfin_config.mk
View File

@ -36,6 +36,7 @@ endif
SYM_PREFIX = _
LDR_FLAGS += -J
LDR_FLAGS += --bmode $(subst BFIN_BOOT_,,$(CONFIG_BFIN_BOOT_MODE))
LDR_FLAGS += --use-vmas
ifneq ($(CONFIG_BFIN_BOOT_MODE),BFIN_BOOT_BYPASS)

3
board/bf533-ezkit/u-boot.lds.S
View File

@ -44,11 +44,10 @@
OUTPUT_ARCH(bfin)
/* The 0xC offset is so we don't clobber the tiny LDR jump block. */
MEMORY
{
ram : ORIGIN = CONFIG_SYS_MONITOR_BASE, LENGTH = CONFIG_SYS_MONITOR_LEN
l1_code : ORIGIN = L1_INST_SRAM+0xC, LENGTH = L1_INST_SRAM_SIZE
l1_code : ORIGIN = L1_INST_SRAM, LENGTH = L1_INST_SRAM_SIZE
l1_data : ORIGIN = L1_DATA_B_SRAM, LENGTH = L1_DATA_B_SRAM_SIZE
}

3
board/bf533-stamp/u-boot.lds.S
View File

@ -44,11 +44,10 @@
OUTPUT_ARCH(bfin)
/* The 0xC offset is so we don't clobber the tiny LDR jump block. */
MEMORY
{
ram : ORIGIN = CONFIG_SYS_MONITOR_BASE, LENGTH = CONFIG_SYS_MONITOR_LEN
l1_code : ORIGIN = L1_INST_SRAM+0xC, LENGTH = L1_INST_SRAM_SIZE
l1_code : ORIGIN = L1_INST_SRAM, LENGTH = L1_INST_SRAM_SIZE
l1_data : ORIGIN = L1_DATA_B_SRAM, LENGTH = L1_DATA_B_SRAM_SIZE
}

3
board/bf537-stamp/u-boot.lds.S
View File

@ -44,11 +44,10 @@
OUTPUT_ARCH(bfin)
/* The 0xC offset is so we don't clobber the tiny LDR jump block. */
MEMORY
{
ram : ORIGIN = CONFIG_SYS_MONITOR_BASE, LENGTH = CONFIG_SYS_MONITOR_LEN
l1_code : ORIGIN = L1_INST_SRAM+0xC, LENGTH = L1_INST_SRAM_SIZE
l1_code : ORIGIN = L1_INST_SRAM, LENGTH = L1_INST_SRAM_SIZE
l1_data : ORIGIN = L1_DATA_B_SRAM, LENGTH = L1_DATA_B_SRAM_SIZE
}

3
board/bf561-ezkit/u-boot.lds.S
View File

@ -44,11 +44,10 @@
OUTPUT_ARCH(bfin)
/* The 0xC offset is so we don't clobber the tiny LDR jump block. */
MEMORY
{
ram : ORIGIN = CONFIG_SYS_MONITOR_BASE, LENGTH = CONFIG_SYS_MONITOR_LEN
l1_code : ORIGIN = L1_INST_SRAM+0xC, LENGTH = L1_INST_SRAM_SIZE
l1_code : ORIGIN = L1_INST_SRAM, LENGTH = L1_INST_SRAM_SIZE
l1_data : ORIGIN = L1_DATA_B_SRAM, LENGTH = L1_DATA_B_SRAM_SIZE
}

8
cpu/blackfin/cpu.c
View File

@ -25,18 +25,12 @@ ulong bfin_poweron_retx;
__attribute__ ((__noreturn__))
void cpu_init_f(ulong bootflag, ulong loaded_from_ldr)
{
/* Build a NOP slide over the LDR jump block. Whee! */
serial_early_puts("NOP Slide\n");
char nops[0xC];
memset(nops, 0x00, sizeof(nops));
extern char _stext_l1;
memcpy(&_stext_l1 - sizeof(nops), nops, sizeof(nops));
if (!loaded_from_ldr) {
/* Relocate sections into L1 if the LDR didn't do it -- don't
* check length because the linker script does the size
* checking at build time.
*/
extern char _stext_l1;
serial_early_puts("L1 Relocate\n");
extern char _stext_l1, _etext_l1, _stext_l1_lma;
memcpy(&_stext_l1, &_stext_l1_lma, (&_etext_l1 - &_stext_l1));

4
cpu/blackfin/initcode.c
View File

@ -372,6 +372,10 @@ void initcode(ADI_BOOT_DATA *bootstruct)
bfin_write_SIC_IWR(-1);
#endif
/* tell the bootrom where our entry point is */
if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS)
bfin_write_EVT1(CONFIG_SYS_MONITOR_BASE);
serial_putc('>');
serial_putc('\n');