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-rw-r--r--arch/powerpc/kernel/head_32.S16
-rw-r--r--arch/powerpc/kernel/udbg.c2
2 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index c86c626cf15..d83f04e5a59 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.
diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index 0f9b4eadfbc..d723070c9a3 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -54,6 +54,8 @@ void __init udbg_early_init(void)
#elif defined(CONFIG_PPC_EARLY_DEBUG_44x)
/* PPC44x debug */
udbg_init_44x_as1();
+#elif defined(CONFIG_PPC_EARLY_DEBUG_CPM)
+ udbg_init_cpm();
#endif
}