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Message-ID: <20070613173741.GA23618@in.ibm.com>
Date: Wed, 13 Jun 2007 23:07:41 +0530
From: Vivek Goyal <vgoyal@...ibm.com>
To: Roland Dreier <rdreier@...co.com>
Cc: linux-kernel@...r.kernel.org,
"Natalie.Protasevich@...sys.com" <Natalie.Protasevich@...sys.com>,
akpm@...ux-foundation.org
Subject: Re: CONFIG_X86_ES7000=y, CONFIG_X86_GENERICARCH=n, CONFIG_ACPI=y build broken
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@...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)
_
-
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