bcm96345: correct some 6345 specific stuff

[openwrt.git] / target / linux / brcm63xx / patches-2.6.25 / 500-bcm96345_fixes.patch

diff --git a/target/linux/brcm63xx/patches-2.6.25/500-bcm96345_fixes.patch b/target/linux/brcm63xx/patches-2.6.25/500-bcm96345_fixes.patch
new file mode 100644 (file)
index 0000000..2aebb29
--- /dev/null
+++ b/target/linux/brcm63xx/patches-2.6.25/500-bcm96345_fixes.patch
@@ -0,0 +1,126 @@
+From d1259cf42ce84246c695f06b44d58e3aca0a480b Mon Sep 17 00:00:00 2001
+From: Axel Gembe <ago@bastart.eu.org>
+Date: Sat, 17 May 2008 14:59:35 +0200
+Subject: [PATCH] bcm96345: correct some 6345 specific stuff
+
+This fixes some problems with the 6345 support and adds a macro for CPU
+identification that is easier on the eyes. The first thing it does is to not
+initialize MPI on the 6345 as it does not have PCI. The second thing it does is
+to use a static value for the CPU frequency of the 6345 chip to provide an
+accurate timer.
+
+Signed-off-by: Axel Gembe <ago@bastart.eu.org>
+---
+ arch/mips/bcm963xx/setup.c             |    8 ++++++--
+ arch/mips/bcm963xx/time.c              |    5 ++++-
+ arch/mips/pci/pci-bcm96348.c           |   21 +++++++++++++--------
+ include/asm-mips/mach-bcm963xx/board.h |    2 ++
+ 4 files changed, 25 insertions(+), 11 deletions(-)
+
+diff --git a/arch/mips/bcm963xx/setup.c b/arch/mips/bcm963xx/setup.c
+index 982cba0..c12c9c3 100644
+--- a/arch/mips/bcm963xx/setup.c
++++ b/arch/mips/bcm963xx/setup.c
+@@ -43,6 +43,7 @@
+ #include <asm/bootinfo.h>
+ #include <asm/cpu.h>
+ #include <asm/mach-bcm963xx/bootloaders.h>
++#include <asm/mach-bcm963xx/board.h>
+ 
+ extern void brcm_time_init(void);
+ extern int boot_loader_type;
+@@ -465,6 +466,9 @@ void __init plat_mem_setup(void)
+       _machine_halt = brcm_machine_halt;
+       pm_power_off = brcm_machine_halt;
+ 
+-      /* mpi initialization */
+-      mpi_init();
++      /* BCM96345 has no MPI */
++      if (!ISBCM(0x6345)) {
++              /* mpi initialization */
++              mpi_init();
++      }
+ }
+diff --git a/arch/mips/bcm963xx/time.c b/arch/mips/bcm963xx/time.c
+index 75f751a..22ad56d 100644
+--- a/arch/mips/bcm963xx/time.c
++++ b/arch/mips/bcm963xx/time.c
+@@ -39,6 +39,8 @@
+ #include <6348_intr.h>
+ #include <bcm_map_part.h>
+ #include <bcm_intr.h>
++#include <asm/mach-bcm963xx/board.h>
++
+ 
+ /*
+  * calculateCpuSpeed()
+@@ -62,11 +64,12 @@ static inline unsigned long __init calculateCpuSpeed(void)
+ }
+ 
+ 
++#define BCM96345_CPU_CLOCK 140000000
+ void __init plat_time_init(void)
+ {
+       unsigned long cpu_clock;
+ 
+-      cpu_clock = calculateCpuSpeed();
++      cpu_clock = ISBCM(0x6345) ? BCM96345_CPU_CLOCK : calculateCpuSpeed();
+ 
+       printk("CPU frequency %lu.%02lu MHz\n", cpu_clock / 1000000,
+               (cpu_clock % 1000000) * 100 / 1000000);
+diff --git a/arch/mips/pci/pci-bcm96348.c b/arch/mips/pci/pci-bcm96348.c
+index bea3b7b..1e82283 100644
+--- a/arch/mips/pci/pci-bcm96348.c
++++ b/arch/mips/pci/pci-bcm96348.c
+@@ -21,6 +21,8 @@
+ #include <linux/kernel.h>
+ #include <linux/init.h>
+ 
++#include <asm/mach-bcm963xx/6348_map_part.h>
++#include <asm/mach-bcm963xx/board.h>
+ #include <bcmpci.h>
+ 
+ static struct resource bcm_pci_io_resource = {
+@@ -47,16 +49,19 @@ struct pci_controller bcm96348_controller = {
+ 
+ static __init int bcm96348_pci_init(void)
+ {
+-      /* Avoid ISA compat ranges.  */
+-      PCIBIOS_MIN_IO = 0x00000000;
+-      PCIBIOS_MIN_MEM = 0x00000000;
++      if (!ISBCM(0x6345)) {
++              /* Avoid ISA compat ranges.  */
++              PCIBIOS_MIN_IO = 0x00000000;
++              PCIBIOS_MIN_MEM = 0x00000000;
+ 
+-      /* Set I/O resource limits.  */
+-      ioport_resource.end = 0x1fffffff;
+-      iomem_resource.end = 0xffffffff;
++              /* Set I/O resource limits.  */
++              ioport_resource.end = 0x1fffffff;
++              iomem_resource.end = 0xffffffff;
+ 
+-      register_pci_controller(&bcm96348_controller);
+-        return 0;
++              register_pci_controller(&bcm96348_controller);
++      }
++
++      return 0;
+ }
+ 
+ arch_initcall(bcm96348_pci_init);
+diff --git a/include/asm-mips/mach-bcm963xx/board.h b/include/asm-mips/mach-bcm963xx/board.h
+index e674cb1..73fa924 100644
+--- a/include/asm-mips/mach-bcm963xx/board.h
++++ b/include/asm-mips/mach-bcm963xx/board.h
+@@ -369,5 +369,7 @@ void kerSysWakeupMonitorTask( void );
+ 
+ extern int boot_loader_type;
+ 
++#define ISBCM(x) (((PERF->RevID & 0xFFFF0000) >> 16) == x)
++
+ #endif /* _BOARD_H */
+ 
+-- 
+1.5.5.1
+