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| author | Scott Wood <scottwood@freescale.com> | 2007-07-16 11:43:43 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2007-10-03 20:35:43 -0500 |
| commit | c374e00e17f1c10768d5af922a1ff33e43df2eb0 (patch) | |
| tree | fc6149e7f3b86bb202c475d4414a926c481761b8 /arch/powerpc/kernel/head_32.S | |
| parent | e631ae3b164158fbf486fbed5adb597696c4f0e5 (diff) | |
| download | lwn-c374e00e17f1c10768d5af922a1ff33e43df2eb0.tar.gz lwn-c374e00e17f1c10768d5af922a1ff33e43df2eb0.zip | |
[POWERPC] Add early debug console for CPM serial ports.
This code assumes that the ports have been previously set up, with
buffers in DPRAM.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/head_32.S')
| -rw-r--r-- | arch/powerpc/kernel/head_32.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index c86c626cf156..d83f04e5a599 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -149,6 +149,9 @@ __after_mmu_off: #if defined(CONFIG_BOOTX_TEXT) bl setup_disp_bat #endif +#ifdef CONFIG_PPC_EARLY_DEBUG_CPM + bl setup_cpm_bat +#endif /* * Call setup_cpu for CPU 0 and initialize 6xx Idle @@ -1245,6 +1248,19 @@ setup_disp_bat: blr #endif /* CONFIG_BOOTX_TEXT */ +#ifdef CONFIG_PPC_EARLY_DEBUG_CPM +setup_cpm_bat: + lis r8, 0xf000 + ori r8, r8, 0x002a + mtspr SPRN_DBAT1L, r8 + + lis r11, 0xf000 + ori r11, r11, (BL_1M << 2) | 2 + mtspr SPRN_DBAT1U, r11 + + blr +#endif + #ifdef CONFIG_8260 /* Jump into the system reset for the rom. * We first disable the MMU, and then jump to the ROM reset address. |