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-rw-r--r--arch/powerpc/cpu/mpc5xxx/spl_boot.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/powerpc/cpu/mpc5xxx/spl_boot.c b/arch/powerpc/cpu/mpc5xxx/spl_boot.c
index 9f14127..080bd58 100644
--- a/arch/powerpc/cpu/mpc5xxx/spl_boot.c
+++ b/arch/powerpc/cpu/mpc5xxx/spl_boot.c
@@ -41,13 +41,12 @@ void board_init_f(ulong bootflag)
end_align = (u32)__spl_flash_end;
/*
- * First we need to initialize the SDRAM, so that the real
- * U-Boot or the OS (Linux) can be loaded
+ * On MPC5200, the initial RAM (and gd) is located in the internal
+ * SRAM. So we can actually call the preloader console init code
+ * before calling initdram(). This makes serial output (printf)
+ * available very early, even before SDRAM init, which has been
+ * an U-Boot priciple from day 1.
*/
- initdram(0);
-
- /* Clear bss */
- memset(__bss_start, '\0', __bss_end__ - __bss_start);
/*
* Init global_data pointer. Has to be done before calling
@@ -71,6 +70,15 @@ void board_init_f(ulong bootflag)
preloader_console_init();
/*
+ * First we need to initialize the SDRAM, so that the real
+ * U-Boot or the OS (Linux) can be loaded
+ */
+ initdram(0);
+
+ /* Clear bss */
+ memset(__bss_start, '\0', __bss_end__ - __bss_start);
+
+ /*
* Call board_init_r() (SPL framework version) to load and boot
* real U-Boot or OS
*/