diff options
| author | Alexey Charkov <alchark@gmail.com> | 2010-12-23 15:11:21 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-25 18:07:01 +0300 |
| commit | 21f47fbc5b18da4a3db680959aee887612ec9a72 (patch) | |
| tree | 46dd2d4010c5c258f30e2dfeb1ea6d9d2404a845 /arch/arm/mach-vt8500/include/mach/entry-macro.S | |
| parent | 1bae4ce27c9c90344f23c65ea6966c50ffeae2f5 (diff) | |
| download | linux-21f47fbc5b18da4a3db680959aee887612ec9a72.tar.xz | |
ARM: 6597/1: Add basic architecture support for VIA/WonderMedia 85xx SoC's
This adds support for the family of Systems-on-Chip produced initially
by VIA and now its subsidiary WonderMedia that have recently become
widespread in lower-end Chinese ARM-based tablets and netbooks.
Support is included for both VT8500 and WM8505, selectable by a
configuration switch at kernel build time.
Included are basic machine initialization files, register and
interrupt definitions, support for the on-chip interrupt controller,
high-precision OS timer, GPIO lines, necessary macros for early debug,
pulse-width-modulated outputs control, as well as platform device
configurations for the specific drivers implemented elsewhere.
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-vt8500/include/mach/entry-macro.S')
| -rw-r--r-- | arch/arm/mach-vt8500/include/mach/entry-macro.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-vt8500/include/mach/entry-macro.S b/arch/arm/mach-vt8500/include/mach/entry-macro.S new file mode 100644 index 000000000000..92684c7eaed3 --- /dev/null +++ b/arch/arm/mach-vt8500/include/mach/entry-macro.S @@ -0,0 +1,32 @@ +/* + * arch/arm/mach-vt8500/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for VIA VT8500 + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + @ physical 0xd8140000 is virtual 0xf8140000 + mov \base, #0xf8000000 + orr \base, \base, #0x00140000 + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqnr, [\base] + cmp \irqnr, #63 @ may be false positive, check interrupt status + bne 1001f + ldr \irqstat, [\base, #0x84] + ands \irqstat, #0x80000000 + moveq \irqnr, #0 +1001: + .endm + |