target/linux/brcm63xx/patches-2.6.25/500-bcm96345_fixes.patch

   1 From d1259cf42ce84246c695f06b44d58e3aca0a480b Mon Sep 17 00:00:00 2001
   2 From: Axel Gembe <ago@bastart.eu.org>
   3 Date: Sat, 17 May 2008 14:59:35 +0200
   4 Subject: [PATCH] bcm96345: correct some 6345 specific stuff
   5
   6 This fixes some problems with the 6345 support and adds a macro for CPU
   7 identification that is easier on the eyes. The first thing it does is to not
   8 initialize MPI on the 6345 as it does not have PCI. The second thing it does is
   9 to use a static value for the CPU frequency of the 6345 chip to provide an
  10 accurate timer.
  11
  12 Signed-off-by: Axel Gembe <ago@bastart.eu.org>
  13 ---
  14  arch/mips/bcm963xx/setup.c             |    8 ++++++--
  15  arch/mips/bcm963xx/time.c              |    5 ++++-
  16  arch/mips/pci/pci-bcm96348.c           |   21 +++++++++++++--------
  17  include/asm-mips/mach-bcm963xx/board.h |    2 ++
  18  4 files changed, 25 insertions(+), 11 deletions(-)
  19
  20 Index: linux-2.6.25.4/arch/mips/bcm963xx/setup.c
  21 ===================================================================
  22 --- linux-2.6.25.4.orig/arch/mips/bcm963xx/setup.c
  23 +++ linux-2.6.25.4/arch/mips/bcm963xx/setup.c
  24 @@ -43,6 +43,7 @@
  25  #include <asm/bootinfo.h>
  26  #include <asm/cpu.h>
  27  #include <asm/mach-bcm963xx/bootloaders.h>
  28 +#include <asm/mach-bcm963xx/board.h>
  29
  30  extern void brcm_time_init(void);
  31  extern int boot_loader_type;
  32 @@ -465,6 +466,9 @@ void __init plat_mem_setup(void)
  33         _machine_halt = brcm_machine_halt;
  34         pm_power_off = brcm_machine_halt;
  35
  36 -       /* mpi initialization */
  37 -       mpi_init();
  38 +       /* BCM96345 has no MPI */
  39 +       if (!ISBCM(0x6345)) {
  40 +               /* mpi initialization */
  41 +               mpi_init();
  42 +       }
  43  }
  44 Index: linux-2.6.25.4/arch/mips/bcm963xx/time.c
  45 ===================================================================
  46 --- linux-2.6.25.4.orig/arch/mips/bcm963xx/time.c
  47 +++ linux-2.6.25.4/arch/mips/bcm963xx/time.c
  48 @@ -40,6 +40,8 @@
  49  #include <6348_intr.h>
  50  #include <bcm_map_part.h>
  51  #include <bcm_intr.h>
  52 +#include <asm/mach-bcm963xx/board.h>
  53 +
  54
  55  /*
  56   * calculateCpuSpeed()
  57 @@ -63,11 +65,12 @@ static inline unsigned long __init calcu
  58  }
  59
  60
  61 +#define BCM96345_CPU_CLOCK 140000000
  62  void __init plat_time_init(void)
  63  {
  64         unsigned long cpu_clock;
  65
  66 -       cpu_clock = calculateCpuSpeed();
  67 +       cpu_clock = ISBCM(0x6345) ? BCM96345_CPU_CLOCK : calculateCpuSpeed();
  68
  69         printk("CPU frequency %lu.%02lu MHz\n", cpu_clock / 1000000,
  70                 (cpu_clock % 1000000) * 100 / 1000000);
  71 Index: linux-2.6.25.4/arch/mips/pci/pci-bcm96348.c
  72 ===================================================================
  73 --- linux-2.6.25.4.orig/arch/mips/pci/pci-bcm96348.c
  74 +++ linux-2.6.25.4/arch/mips/pci/pci-bcm96348.c
  75 @@ -21,6 +21,8 @@
  76  #include <linux/kernel.h>
  77  #include <linux/init.h>
  78
  79 +#include <asm/mach-bcm963xx/6348_map_part.h>
  80 +#include <asm/mach-bcm963xx/board.h>
  81  #include <bcmpci.h>
  82
  83  static struct resource bcm_pci_io_resource = {
  84 @@ -47,16 +49,19 @@ struct pci_controller bcm96348_controlle
  85
  86  static __init int bcm96348_pci_init(void)
  87  {
  88 -       /* Avoid ISA compat ranges.  */
  89 -       PCIBIOS_MIN_IO = 0x00000000;
  90 -       PCIBIOS_MIN_MEM = 0x00000000;
  91 -
  92 -       /* Set I/O resource limits.  */
  93 -       ioport_resource.end = 0x1fffffff;
  94 -       iomem_resource.end = 0xffffffff;
  95 +       if (!ISBCM(0x6345)) {
  96 +               /* Avoid ISA compat ranges.  */
  97 +               PCIBIOS_MIN_IO = 0x00000000;
  98 +               PCIBIOS_MIN_MEM = 0x00000000;
  99 +
 100 +               /* Set I/O resource limits.  */
 101 +               ioport_resource.end = 0x1fffffff;
 102 +               iomem_resource.end = 0xffffffff;
 103
 104 -       register_pci_controller(&bcm96348_controller);
 105 -        return 0;
 106 +               register_pci_controller(&bcm96348_controller);
 107 +       }
 108 +
 109 +       return 0;
 110  }
 111
 112  arch_initcall(bcm96348_pci_init);
 113 Index: linux-2.6.25.4/include/asm-mips/mach-bcm963xx/board.h
 114 ===================================================================
 115 --- linux-2.6.25.4.orig/include/asm-mips/mach-bcm963xx/board.h
 116 +++ linux-2.6.25.4/include/asm-mips/mach-bcm963xx/board.h
 117 @@ -369,5 +369,7 @@ void kerSysWakeupMonitorTask( void );
 118
 119  extern int boot_loader_type;
 120
 121 +#define ISBCM(x) (((PERF->RevID & 0xFFFF0000) >> 16) == x)
 122 +
 123  #endif /* _BOARD_H */
 124