diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 15:50:49 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 15:50:49 -0700 |
commit | 9a64388d83f6ef08dfff405a9d122e3dbcb6bf38 (patch) | |
tree | a77532ce4d6d56be6c6c7f405cd901a0184250fb /arch/powerpc/mm/fsl_booke_mmu.c | |
parent | e80ab411e589e00550e2e6e5a6a02d59cc730357 (diff) | |
parent | 14b3ca4022f050f8622ed282b734ddf445464583 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (202 commits)
[POWERPC] Fix compile breakage for 64-bit UP configs
[POWERPC] Define copy_siginfo_from_user32
[POWERPC] Add compat handler for PTRACE_GETSIGINFO
[POWERPC] i2c: Fix build breakage introduced by OF helpers
[POWERPC] Optimize fls64() on 64-bit processors
[POWERPC] irqtrace support for 64-bit powerpc
[POWERPC] Stacktrace support for lockdep
[POWERPC] Move stackframe definitions to common header
[POWERPC] Fix device-tree locking vs. interrupts
[POWERPC] Make pci_bus_to_host()'s struct pci_bus * argument const
[POWERPC] Remove unused __max_memory variable
[POWERPC] Simplify xics direct/lpar irq_host setup
[POWERPC] Use pseries_setup_i8259_cascade() in pseries_mpic_init_IRQ()
[POWERPC] Turn xics_setup_8259_cascade() into a generic pseries_setup_i8259_cascade()
[POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.c
[POWERPC] Use asm-generic/bitops/find.h in bitops.h
[POWERPC] 83xx: mpc8315 - fix USB UTMI Host setup
[POWERPC] 85xx: Fix the size of qe muram for MPC8568E
[POWERPC] 86xx: mpc86xx_hpcn - Temporarily accept old dts node identifier.
[POWERPC] 86xx: mark functions static, other minor cleanups
...
Diffstat (limited to 'arch/powerpc/mm/fsl_booke_mmu.c')
-rw-r--r-- | arch/powerpc/mm/fsl_booke_mmu.c | 48 |
1 files changed, 21 insertions, 27 deletions
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index c93a966b7e4..ada249bf977 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -49,18 +49,15 @@ #include <asm/mmu.h> #include <asm/uaccess.h> #include <asm/smp.h> -#include <asm/bootx.h> #include <asm/machdep.h> #include <asm/setup.h> +#include "mmu_decl.h" + extern void loadcam_entry(unsigned int index); unsigned int tlbcam_index; unsigned int num_tlbcam_entries; static unsigned long __cam0, __cam1, __cam2; -extern unsigned long total_lowmem; -extern unsigned long __max_low_memory; -extern unsigned long __initial_memory_limit; -#define MAX_LOW_MEM CONFIG_LOWMEM_SIZE #define NUM_TLBCAMS (16) @@ -165,15 +162,15 @@ void invalidate_tlbcam_entry(int index) void __init cam_mapin_ram(unsigned long cam0, unsigned long cam1, unsigned long cam2) { - settlbcam(0, PAGE_OFFSET, PPC_MEMSTART, cam0, _PAGE_KERNEL, 0); + settlbcam(0, PAGE_OFFSET, memstart_addr, cam0, _PAGE_KERNEL, 0); tlbcam_index++; if (cam1) { tlbcam_index++; - settlbcam(1, PAGE_OFFSET+cam0, PPC_MEMSTART+cam0, cam1, _PAGE_KERNEL, 0); + settlbcam(1, PAGE_OFFSET+cam0, memstart_addr+cam0, cam1, _PAGE_KERNEL, 0); } if (cam2) { tlbcam_index++; - settlbcam(2, PAGE_OFFSET+cam0+cam1, PPC_MEMSTART+cam0+cam1, cam2, _PAGE_KERNEL, 0); + settlbcam(2, PAGE_OFFSET+cam0+cam1, memstart_addr+cam0+cam1, cam2, _PAGE_KERNEL, 0); } } @@ -196,35 +193,32 @@ unsigned long __init mmu_mapin_ram(void) void __init adjust_total_lowmem(void) { - unsigned long max_low_mem = MAX_LOW_MEM; - unsigned long cam_max = 0x10000000; - unsigned long ram; + phys_addr_t max_lowmem_size = __max_low_memory; + phys_addr_t cam_max_size = 0x10000000; + phys_addr_t ram; - /* adjust CAM size to max_low_mem */ - if (max_low_mem < cam_max) - cam_max = max_low_mem; + /* adjust CAM size to max_lowmem_size */ + if (max_lowmem_size < cam_max_size) + cam_max_size = max_lowmem_size; - /* adjust lowmem size to max_low_mem */ - if (max_low_mem < total_lowmem) - ram = max_low_mem; - else - ram = total_lowmem; + /* adjust lowmem size to max_lowmem_size */ + ram = min(max_lowmem_size, total_lowmem); /* Calculate CAM values */ __cam0 = 1UL << 2 * (__ilog2(ram) / 2); - if (__cam0 > cam_max) - __cam0 = cam_max; + if (__cam0 > cam_max_size) + __cam0 = cam_max_size; ram -= __cam0; if (ram) { __cam1 = 1UL << 2 * (__ilog2(ram) / 2); - if (__cam1 > cam_max) - __cam1 = cam_max; + if (__cam1 > cam_max_size) + __cam1 = cam_max_size; ram -= __cam1; } if (ram) { __cam2 = 1UL << 2 * (__ilog2(ram) / 2); - if (__cam2 > cam_max) - __cam2 = cam_max; + if (__cam2 > cam_max_size) + __cam2 = cam_max_size; ram -= __cam2; } @@ -232,6 +226,6 @@ adjust_total_lowmem(void) " CAM2=%ldMb residual: %ldMb\n", __cam0 >> 20, __cam1 >> 20, __cam2 >> 20, (total_lowmem - __cam0 - __cam1 - __cam2) >> 20); - __max_low_memory = max_low_mem = __cam0 + __cam1 + __cam2; - __initial_memory_limit = __max_low_memory; + __max_low_memory = __cam0 + __cam1 + __cam2; + __initial_memory_limit_addr = memstart_addr + __max_low_memory; } |