Re: CONFIG_X86_ES7000=y, CONFIG_X86_GENERICARCH=n, CONFIG_ACPI=y build broken

[Vivek Goyal <vgoyal@in.ibm.com>]

On Tue, Jun 12, 2007 at 12:13:50PM -0700, Roland Dreier wrote:
> (sending to Vivek since he seems to be one of the last people to touch
> this code)
> 
> For some strange reason I found myself compiling a kernel with
> CONFIG_X86_ES7000 and CONFIG_ACPI set and CONFIG_X86_GENERICARCH not
> set.  It died with
> 
>     arch/i386/kernel/built-in.o: In function `acpi_parse_madt':
>     boot.c:(.init.text+0x68b7): undefined reference to `acpi_madt_oem_check'
>     arch/i386/kernel/built-in.o: In function `get_smp_config':
>     (.init.text+0x9f98): undefined reference to `mps_oem_check'
>     arch/i386/kernel/built-in.o: In function `connect_bsp_APIC':
>     (.init.text+0xa340): undefined reference to `enable_apic_mode'
>     arch/i386/kernel/built-in.o: In function `connect_bsp_APIC':
>     (.init.text+0xa370): undefined reference to `enable_apic_mode'
> 
> this seems to be because eg acpi_madt_oem_check() and mps_oem_check()
> are defined in arch/i386/mach-generic/es7000.c, but arch/i386/Makefile
> only goes into mach-generic if CONFIG_X86_GENERICARCH is set.
> I didn't track down why enable_apic_mode is broken yet.
>

Hi Roland,

Can you please try the attached patch? I have compiled it with CONFIG_ES7000=y
and CONFIG_X86_GENERICARCH=n. But don't have any ES7000 machine to test it.

I have compiled and booted the kernel on my machine with CONFIG_X86_GENERICARCH=y.

Subarch build procedure is not straightforward and this patch adds to the
misery. Please suggest if there is a better way of handling things.

 

o Commit 1833d6bc72893265f22addd79cf52e6987496e0f broke the build if
  compiled with CONFIG_ES7000=y and CONFIG_X86_GENERICARCH=n

o Fix the build issue. Provided the definitions of missing functions.


Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
---

 linux-2.6.22-rc4-git4-vivek/arch/i386/mach-es7000/es7000plat.c          |   48 ++++++++++
 linux-2.6.22-rc4-git4-vivek/include/asm-i386/mach-es7000/mach_apic.h    |    4 
 linux-2.6.22-rc4-git4-vivek/include/asm-i386/mach-es7000/mach_mpparse.h |    6 +
 3 files changed, 58 insertions(+)

diff -puN arch/i386/mach-es7000/es7000plat.c~i386-es7000-build-breakage-fix arch/i386/mach-es7000/es7000plat.c
--- linux-2.6.22-rc4-git4/arch/i386/mach-es7000/es7000plat.c~i386-es7000-build-breakage-fix	2007-06-13 22:52:14.000000000 +0530
+++ linux-2.6.22-rc4-git4-vivek/arch/i386/mach-es7000/es7000plat.c	2007-06-13 22:53:03.000000000 +0530
@@ -40,6 +40,7 @@
 #include <asm/smp.h>
 #include <asm/apicdef.h>
 #include "es7000.h"
+#include <mach_mpparse.h>
 
 /*
  * ES7000 Globals
@@ -174,6 +175,53 @@ find_unisys_acpi_oem_table(unsigned long
 }
 #endif
 
+/*
+ * This file also gets compiled if CONFIG_X86_GENERICARCH is set. Generic
+ * arch already has got following function definitions (asm-generic/es7000.c)
+ * hence no need to define these for that case.
+ */
+#ifndef CONFIG_X86_GENERICARCH
+void es7000_sw_apic(void);
+void __init enable_apic_mode(void)
+{
+	es7000_sw_apic();
+	return;
+}
+
+__init int mps_oem_check(struct mp_config_table *mpc, char *oem,
+		char *productid)
+{
+	if (mpc->mpc_oemptr) {
+		struct mp_config_oemtable *oem_table =
+			(struct mp_config_oemtable *)mpc->mpc_oemptr;
+		if (!strncmp(oem, "UNISYS", 6))
+			return parse_unisys_oem((char *)oem_table);
+	}
+	return 0;
+}
+#ifdef CONFIG_ACPI
+/* Hook from generic ACPI tables.c */
+int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	unsigned long oem_addr;
+	if (!find_unisys_acpi_oem_table(&oem_addr)) {
+		if (es7000_check_dsdt())
+			return parse_unisys_oem((char *)oem_addr);
+		else {
+			setup_unisys();
+			return 1;
+		}
+	}
+	return 0;
+}
+#else
+int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	return 0;
+}
+#endif
+#endif /* COFIG_X86_GENERICARCH */
+
 static void
 es7000_spin(int n)
 {
diff -puN include/asm-i386/mach-es7000/mach_apic.h~i386-es7000-build-breakage-fix include/asm-i386/mach-es7000/mach_apic.h
--- linux-2.6.22-rc4-git4/include/asm-i386/mach-es7000/mach_apic.h~i386-es7000-build-breakage-fix	2007-06-13 22:52:14.000000000 +0530
+++ linux-2.6.22-rc4-git4-vivek/include/asm-i386/mach-es7000/mach_apic.h	2007-06-13 22:52:14.000000000 +0530
@@ -73,6 +73,10 @@ static inline void init_apic_ldr(void)
 	apic_write_around(APIC_LDR, val);
 }
 
+#ifndef CONFIG_X86_GENERICARCH
+extern void enable_apic_mode(void);
+#endif
+
 extern int apic_version [MAX_APICS];
 static inline void setup_apic_routing(void)
 {
diff -puN include/asm-i386/mach-es7000/mach_mpparse.h~i386-es7000-build-breakage-fix include/asm-i386/mach-es7000/mach_mpparse.h
--- linux-2.6.22-rc4-git4/include/asm-i386/mach-es7000/mach_mpparse.h~i386-es7000-build-breakage-fix	2007-06-13 22:52:14.000000000 +0530
+++ linux-2.6.22-rc4-git4-vivek/include/asm-i386/mach-es7000/mach_mpparse.h	2007-06-13 22:52:14.000000000 +0530
@@ -18,6 +18,12 @@ extern int parse_unisys_oem (char *oempt
 extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
 extern void setup_unisys(void);
 
+#ifndef CONFIG_X86_GENERICARCH
+extern int acpi_madt_oem_check(char *oem_id, char *oem_table_id);
+extern int mps_oem_check(struct mp_config_table *mpc, char *oem,
+				char *productid);
+#endif
+
 #ifdef CONFIG_ACPI
 
 static inline int es7000_check_dsdt(void)
_