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| author |   Michal Simek <michal.simek@xilinx.com> | 2013-11-06 16:36:08 +0100 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2013-11-07 09:22:40 +0100 |
| commit | 7f15a256b556bf26780d7a0bd03c88914a852022 (patch) | |
| tree | bbb2027e663a55204c63859c61fb06d09796bbb8 /arch/microblaze | |
| parent | microblaze: Remove unused NO_MMU Kconfig parameter (diff) | |
| download | linux-dev-7f15a256b556bf26780d7a0bd03c88914a852022.tar.xz linux-dev-7f15a256b556bf26780d7a0bd03c88914a852022.zip | |
microblaze: Calculate kernel pad automatically
The kernel needs to setup the first two tlbs with pad
which is used for early page allocation which is used
by mapin_ram() to allocate tables for lowmem memory
before memory initialisation is done.
Calculate pad directly from lowmem size.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch/microblaze')
| -rw-r--r-- | arch/microblaze/Kconfig | 4 | ||||
| -rw-r--r-- | arch/microblaze/kernel/head.S | 2 |
2 files changed, 1 insertions, 5 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index d8ec74b4d1ee..655e1cadf692 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -245,10 +245,6 @@ config MICROBLAZE_64K_PAGES endchoice -config KERNEL_PAD - hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS - default "0x80000" if MMU - endmenu source "mm/Kconfig" diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S index fcc797feb9db..817b7eec95b6 100644 --- a/arch/microblaze/kernel/head.S +++ b/arch/microblaze/kernel/head.S @@ -176,7 +176,7 @@ _invalidate: /* start to do TLB calculation */ addik r12, r0, _end rsub r12, r3, r12 - addik r12, r12, CONFIG_KERNEL_PAD /* that's the pad */ + addik r12, r12, CONFIG_LOWMEM_SIZE >> PTE_SHIFT /* that's the pad */ or r9, r0, r0 /* TLB0 = 0 */ or r10, r0, r0 /* TLB1 = 0 */ |