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| author | Mike Frysinger <vapier@gentoo.org> | 2009-11-09 19:38:23 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-01-17 09:17:26 -0500 |
| commit | 7527feef06b13e9fd5b6d10a4bfc81b59ee56f27 (patch) | |
| tree | 59b7eb57888f4c26f68e9430346650de19f002d7 /cpu/blackfin | |
| parent | dbda2c65e5fec92d0791367b53042983746ce95b (diff) | |
| download | u-boot-imx-7527feef06b13e9fd5b6d10a4bfc81b59ee56f27.zip u-boot-imx-7527feef06b13e9fd5b6d10a4bfc81b59ee56f27.tar.gz u-boot-imx-7527feef06b13e9fd5b6d10a4bfc81b59ee56f27.tar.bz2 | |
Blackfin: support boards with no external memory
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'cpu/blackfin')
| -rw-r--r-- | cpu/blackfin/initcode.c | 16 | ||||
| -rw-r--r-- | cpu/blackfin/start.S | 6 |
2 files changed, 21 insertions, 1 deletions
diff --git a/cpu/blackfin/initcode.c b/cpu/blackfin/initcode.c index bb58898..ed43f85 100644 --- a/cpu/blackfin/initcode.c +++ b/cpu/blackfin/initcode.c @@ -538,10 +538,18 @@ program_memory_controller(ADI_BOOT_DATA *bs, bool put_into_srfs) * self-refresh. So we have to pull it out before programming. */ #ifdef EBIU_RSTCTL +# ifdef CONFIG_EBIU_RSTCTL_VAL bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() | 0x1 /*DDRSRESET*/ | CONFIG_EBIU_RSTCTL_VAL); +# endif +# ifdef CONFIG_EBIU_DDRCTL0_VAL bfin_write_EBIU_DDRCTL0(CONFIG_EBIU_DDRCTL0_VAL); +# endif +# ifdef CONFIG_EBIU_DDRCTL1_VAL bfin_write_EBIU_DDRCTL1(CONFIG_EBIU_DDRCTL1_VAL); +# endif +# ifdef CONFIG_EBIU_DDRCTL2_VAL bfin_write_EBIU_DDRCTL2(CONFIG_EBIU_DDRCTL2_VAL); +# endif # ifdef CONFIG_EBIU_DDRCTL3_VAL /* default is disable, so don't need to force this */ bfin_write_EBIU_DDRCTL3(CONFIG_EBIU_DDRCTL3_VAL); @@ -611,11 +619,17 @@ program_async_controller(ADI_BOOT_DATA *bs) serial_putc('b'); -#ifdef EBIU_MODE /* Not all parts have these additional MMRs. */ +#ifdef EBIU_MODE +# ifdef CONFIG_EBIU_MBSCTL_VAL bfin_write_EBIU_MBSCTL(CONFIG_EBIU_MBSCTL_VAL); +# endif +# ifdef CONFIG_EBIU_MODE_VAL bfin_write_EBIU_MODE(CONFIG_EBIU_MODE_VAL); +# endif +# ifdef CONFIG_EBIU_FCTL_VAL bfin_write_EBIU_FCTL(CONFIG_EBIU_FCTL_VAL); +# endif #endif serial_putc('c'); diff --git a/cpu/blackfin/start.S b/cpu/blackfin/start.S index 44e2725..7a3abba 100644 --- a/cpu/blackfin/start.S +++ b/cpu/blackfin/start.S @@ -95,6 +95,7 @@ ENTRY(_start) /* Save RETX so we can pass it while booting Linux */ r7 = RETX; +#if CONFIG_MEM_SIZE /* Figure out where we are currently executing so that we can decide * how to best reprogram and relocate things. We'll pass below: * R4: load address of _start @@ -131,6 +132,9 @@ ENTRY(_start) r3.h = 0x2000; cc = r5 < r3 (iu); if cc jump .Ldma_and_reprogram; +#else + r6 = 1 (x); /* fake loaded_from_ldr = 1 */ +#endif r0 = 0 (x); /* set bootstruct to NULL */ call _initcode; jump .Lprogrammed; @@ -154,6 +158,7 @@ ENTRY(_start) .Lprogrammed: serial_early_set_baud +#if CONFIG_MEM_SIZE /* Relocate from wherever we are (FLASH/RAM/etc...) to the hardcoded * monitor location in the end of RAM. We know that memcpy() only * uses registers, so it is safe to call here. Note that this only @@ -166,6 +171,7 @@ ENTRY(_start) r2.l = LO(CONFIG_SYS_MONITOR_LEN); r2.h = HI(CONFIG_SYS_MONITOR_LEN); call _memcpy_ASM; +#endif /* Initialize BSS section ... we know that memset() does not * use the BSS, so it is safe to call here. The bootrom LDR |