[PATCH] ppc32: Fix some minor issues related to FSL Book-E KGDB support

Some debug registers needed to be initialized early on to allow proper
support for KGDB.  Additionally, we need to setup the
ppc.md_early_serial_map function pointer on boards that have serial support
for KGDB.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/ppc/kernel/head_fsl_booke.S b/arch/ppc/kernel/head_fsl_booke.S
index f22ddce36135fddce922d21e2b033d642f5fe946..ce36e88ba6277ea68631ddd0fc8fb13623e94fe6 100644 (file)
--- a/arch/ppc/kernel/head_fsl_booke.S
+++ b/arch/ppc/kernel/head_fsl_booke.S
@@ -232,7 +232,8 @@ skpinv:     addi    r6,r6,1                         /* Increment */
        tlbwe
 
 /* 7. Jump to KERNELBASE mapping */
-       li      r7,0
+       lis     r7,MSR_KERNEL@h
+       ori     r7,r7,MSR_KERNEL@l
        bl      1f                      /* Find our address */
 1:     mflr    r9
        rlwimi  r6,r9,0,20,31
@@ -293,6 +294,18 @@ skpinv:    addi    r6,r6,1                         /* Increment */
        mtspr   SPRN_HID0, r2
 #endif
 
+#if !defined(CONFIG_BDI_SWITCH)
+       /*
+        * The Abatron BDI JTAG debugger does not tolerate others
+        * mucking with the debug registers.
+        */
+       lis     r2,DBCR0_IDM@h
+       mtspr   SPRN_DBCR0,r2
+       /* clear any residual debug events */
+       li      r2,-1
+       mtspr   SPRN_DBSR,r2
+#endif
+
        /*
         * This is where the main kernel code starts.
         */

diff --git a/arch/ppc/platforms/85xx/mpc8540_ads.c b/arch/ppc/platforms/85xx/mpc8540_ads.c
index 4d857d6d633d757c7818356c24a12219f99c341d..583838ab02d8370a97d22640915a3fed84d1eaf6 100644 (file)
--- a/arch/ppc/platforms/85xx/mpc8540_ads.c
+++ b/arch/ppc/platforms/85xx/mpc8540_ads.c
@@ -210,6 +210,9 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
        ppc_md.progress = gen550_progress;
 #endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
+#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
+       ppc_md.early_serial_map = mpc85xx_early_serial_map;
+#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
 
        if (ppc_md.progress)
                ppc_md.progress("mpc8540ads_init(): exit", 0);

diff --git a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
index 6c020d67ad704457a1341d2295907d5c52733928..11fb758d269f701dd817496a24f474fc2c68b6d9 100644 (file)
--- a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
+++ b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
@@ -459,6 +459,9 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
        ppc_md.progress = gen550_progress;
 #endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
+#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
+       ppc_md.early_serial_map = mpc85xx_early_serial_map;
+#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
 
        if (ppc_md.progress)
                ppc_md.progress("mpc85xx_cds_init(): exit", 0);

diff --git a/arch/ppc/platforms/85xx/sbc8560.c b/arch/ppc/platforms/85xx/sbc8560.c
index 9ab05e590c3e0a60537052f7880fc5f8e4033aba..7b9e1543e17524e6301e4c45cd9d77b4a6b8967e 100644 (file)
--- a/arch/ppc/platforms/85xx/sbc8560.c
+++ b/arch/ppc/platforms/85xx/sbc8560.c
@@ -221,6 +221,9 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
        ppc_md.progress = gen550_progress;
 #endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
+#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
+       ppc_md.early_serial_map = sbc8560_early_serial_map;
+#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
 
        if (ppc_md.progress)
                ppc_md.progress("sbc8560_init(): exit", 0);