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| author | Michal Simek <monstr@monstr.eu> | 2012-06-28 14:34:32 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2012-09-11 09:24:56 +0200 |
| commit | b710d9d6c2921982a448903d3c10a14d6ee22ae3 (patch) | |
| tree | 38f30022d7fbb1b56c02267561720106e97dd349 /arch/microblaze/lib | |
| parent | 03afad2fc90dcff42402b0183f4b4f5119f99a18 (diff) | |
| download | u-boot-imx-b710d9d6c2921982a448903d3c10a14d6ee22ae3.zip u-boot-imx-b710d9d6c2921982a448903d3c10a14d6ee22ae3.tar.gz u-boot-imx-b710d9d6c2921982a448903d3c10a14d6ee22ae3.tar.bz2 | |
microblaze: Add support for device tree driven board configuration
This is minimum code required to be able to use device-tree
for u-boot initialization.
Currently only for device driver initialization.
Linker script change ensures DTB to be aligned
for both options CONFIG_OF_EMBED and CONFIG_OF_SEPARATE.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephan Linz <linz@li-pro.net>
CC: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/microblaze/lib')
| -rw-r--r-- | arch/microblaze/lib/board.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/microblaze/lib/board.c b/arch/microblaze/lib/board.c index b80250a..942e18c 100644 --- a/arch/microblaze/lib/board.c +++ b/arch/microblaze/lib/board.c @@ -34,6 +34,7 @@ #include <net.h> #include <asm/processor.h> #include <asm/microblaze_intc.h> +#include <fdtdec.h> DECLARE_GLOBAL_DATA_PTR; @@ -63,6 +64,9 @@ typedef int (init_fnc_t) (void); init_fnc_t *init_sequence[] = { env_init, +#ifdef CONFIG_OF_CONTROL + fdtdec_check_fdt, +#endif serial_init, console_init_f, #ifdef CONFIG_SYS_GPIO_0 @@ -103,6 +107,17 @@ void board_init (void) monitor_flash_len = __end - __text_start; +#ifdef CONFIG_OF_EMBED + /* Get a pointer to the FDT */ + gd->fdt_blob = _binary_dt_dtb_start; +#elif defined CONFIG_OF_SEPARATE + /* FDT is at end of image */ + gd->fdt_blob = (void *)__end; +#endif + /* Allow the early environment to override the fdt address */ + gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, + (uintptr_t)gd->fdt_blob); + /* * The Malloc area is immediately below the monitor copy in DRAM * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off @@ -121,6 +136,15 @@ void board_init (void) } } +#ifdef CONFIG_OF_CONTROL + /* For now, put this check after the console is ready */ + if (fdtdec_prepare_fdt()) { + panic("** CONFIG_OF_CONTROL defined but no FDT - please see " + "doc/README.fdt-control"); + } else + printf("DTB: 0x%x\n", (u32)gd->fdt_blob); +#endif + puts ("SDRAM :\n"); printf ("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF"); printf ("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF"); |