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117 lines
3.1 KiB
Diff
117 lines
3.1 KiB
Diff
From d1259cf42ce84246c695f06b44d58e3aca0a480b Mon Sep 17 00:00:00 2001
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From: Axel Gembe <ago@bastart.eu.org>
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Date: Sat, 17 May 2008 14:59:35 +0200
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Subject: [PATCH] bcm96345: correct some 6345 specific stuff
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This fixes some problems with the 6345 support and adds a macro for CPU
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identification that is easier on the eyes. The first thing it does is to not
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initialize MPI on the 6345 as it does not have PCI. The second thing it does is
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to use a static value for the CPU frequency of the 6345 chip to provide an
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accurate timer.
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Signed-off-by: Axel Gembe <ago@bastart.eu.org>
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---
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arch/mips/bcm963xx/setup.c | 8 ++++++--
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arch/mips/bcm963xx/time.c | 5 ++++-
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arch/mips/pci/pci-bcm96348.c | 21 +++++++++++++--------
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include/asm-mips/mach-bcm963xx/board.h | 2 ++
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4 files changed, 25 insertions(+), 11 deletions(-)
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--- a/arch/mips/bcm963xx/setup.c
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+++ b/arch/mips/bcm963xx/setup.c
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@@ -43,6 +43,7 @@
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#include <asm/bootinfo.h>
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#include <asm/cpu.h>
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#include <asm/mach-bcm963xx/bootloaders.h>
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+#include <asm/mach-bcm963xx/board.h>
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extern void brcm_time_init(void);
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extern int boot_loader_type;
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@@ -465,6 +466,9 @@
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_machine_halt = brcm_machine_halt;
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pm_power_off = brcm_machine_halt;
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- /* mpi initialization */
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- mpi_init();
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+ /* BCM96345 has no MPI */
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+ if (!ISBCM(0x6345)) {
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+ /* mpi initialization */
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+ mpi_init();
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+ }
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}
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--- a/arch/mips/bcm963xx/time.c
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+++ b/arch/mips/bcm963xx/time.c
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@@ -40,6 +40,8 @@
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#include <6348_intr.h>
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#include <bcm_map_part.h>
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#include <bcm_intr.h>
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+#include <asm/mach-bcm963xx/board.h>
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+
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/*
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* calculateCpuSpeed()
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@@ -63,11 +65,12 @@
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}
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+#define BCM96345_CPU_CLOCK 140000000
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void __init plat_time_init(void)
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{
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unsigned long cpu_clock;
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- cpu_clock = calculateCpuSpeed();
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+ cpu_clock = ISBCM(0x6345) ? BCM96345_CPU_CLOCK : calculateCpuSpeed();
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printk("CPU frequency %lu.%02lu MHz\n", cpu_clock / 1000000,
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(cpu_clock % 1000000) * 100 / 1000000);
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--- a/arch/mips/pci/pci-bcm96348.c
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+++ b/arch/mips/pci/pci-bcm96348.c
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@@ -21,6 +21,8 @@
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#include <linux/kernel.h>
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#include <linux/init.h>
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+#include <asm/mach-bcm963xx/6348_map_part.h>
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+#include <asm/mach-bcm963xx/board.h>
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#include <bcmpci.h>
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static struct resource bcm_pci_io_resource = {
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@@ -47,16 +49,19 @@
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static __init int bcm96348_pci_init(void)
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{
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- /* Avoid ISA compat ranges. */
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- PCIBIOS_MIN_IO = 0x00000000;
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- PCIBIOS_MIN_MEM = 0x00000000;
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-
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- /* Set I/O resource limits. */
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- ioport_resource.end = 0x1fffffff;
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- iomem_resource.end = 0xffffffff;
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+ if (!ISBCM(0x6345)) {
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+ /* Avoid ISA compat ranges. */
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+ PCIBIOS_MIN_IO = 0x00000000;
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+ PCIBIOS_MIN_MEM = 0x00000000;
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+
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+ /* Set I/O resource limits. */
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+ ioport_resource.end = 0x1fffffff;
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+ iomem_resource.end = 0xffffffff;
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- register_pci_controller(&bcm96348_controller);
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- return 0;
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+ register_pci_controller(&bcm96348_controller);
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+ }
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+
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+ return 0;
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}
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arch_initcall(bcm96348_pci_init);
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--- a/include/asm-mips/mach-bcm963xx/board.h
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+++ b/include/asm-mips/mach-bcm963xx/board.h
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@@ -369,5 +369,7 @@
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extern int boot_loader_type;
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+#define ISBCM(x) (((PERF->RevID & 0xFFFF0000) >> 16) == x)
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+
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#endif /* _BOARD_H */
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