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Siarhei Siamashka ssvb

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ssvb / gist:e395652fc5a3012f8f4b
Created August 15, 2015 17:23
A80 fel stack location test
# str sp, [pc]
fel fill 0x10000 1 0x00
fel fill 0x10001 1 0xd0
fel fill 0x10002 1 0x8f
fel fill 0x10003 1 0xe5
# bx lr
fel fill 0x10004 1 0x1e
fel fill 0x10005 1 0xff
fel fill 0x10006 1 0x2f
@ssvb
ssvb / a31s-allow-access-to-rtc-from-non-secure-mode.diff
Created August 24, 2015 21:15
Patch for U-Boot to allow access to RTC clock from non-secure mode on Allwinner A31s to fix /dev/rtc in Linux
diff --git a/arch/arm/cpu/armv7/sunxi/board.c b/arch/arm/cpu/armv7/sunxi/board.c
index f01846e..cd06c72 100644
--- a/arch/arm/cpu/armv7/sunxi/board.c
+++ b/arch/arm/cpu/armv7/sunxi/board.c
@@ -106,6 +106,10 @@ void s_init(void)
* access gets messed up (seems cache related) */
setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800);
#endif
+#if defined CONFIG_MACH_SUN6I
+ /* Allow access to RTC clock from non-secure mode */
@ssvb
ssvb / u-boot-a10-lime-otg.diff
Created September 13, 2015 13:42
diff --git a/configs/A10-OLinuXino-Lime_defconfig b/configs/A10-OLinuXino-Lime_defconfig
index ee219f8..f826a51 100644
--- a/configs/A10-OLinuXino-Lime_defconfig
+++ b/configs/A10-OLinuXino-Lime_defconfig
@@ -13,3 +13,7 @@ CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,SUNXI_EMAC,AHCI,SATAPWR=SUNXI_GPC(3)"
# CONFIG_CMD_FLASH is not set
# CONFIG_CMD_FPGA is not set
CONFIG_USB_EHCI_HCD=y
+CONFIG_USB0_VBUS_PIN="PB9"
+CONFIG_USB0_ID_DET="PH4"
@ssvb
ssvb / gist:2885230
Created June 6, 2012 22:30
$ cat test_adds_epu16.c
#include <emmintrin.h>
__m128i x(__m128i a, __m128i b)
{
return _mm_adds_epu16(a, b);
}
$ gcc -O3 -c test_adds_epu16.c
$ objdump -d test_adds_epu16.o
@ssvb
ssvb / gist:2913581
Created June 12, 2012 00:18
#include <stdint.h>
#include <assert.h>
#include <emmintrin.h>
uint32_t foo(uint32_t a)
{
__m128i xa = _mm_cvtsi32_si128(a);
return _mm_cvtsi128_si32(_mm_packus_epi16(xa, xa));
}
@ssvb
ssvb / gist:3168368
Created July 24, 2012 06:24
Some oprofile log snippets for https://plus.google.com/u/0/100242854243155306943/posts/KWcGxqFemfV
Some oprofile log snippets for https://plus.google.com/u/0/100242854243155306943/posts/KWcGxqFemfV
Run on ARM Cortex-A8 1GHz, videotestsrc used instead of v4l2src (no camera here)
----------------------------------------------------------------------------
# opcontrol --deinit
# opcontrol --separate=kernel --no-vmlinux
# opcontrol --init
# opcontrol --reset
@ssvb
ssvb / its_script
Created November 13, 2012 18:39
mkimage script for creating vmlinuz file from zImage for ARM Chromebook
/dts-v1/;
/ {
description = "Chrome OS kernel image with one or more FDT blobs";
#address-cells = <1>;
images {
kernel@1 {
data = /incbin/("arch/arm/boot/zImage");
type = "kernel_noload";
@ssvb
ssvb / gist:4117583
Created November 20, 2012 12:11
DirectFB benchmark on Mele A2000 (Allwinner A10)
Graphics acceleration benchmark on Allwinner A10 (1GHz, 2x16-bit DDR3 @480MHz)
DirectFB 1.4.11 patched with https://github.com/allwinner-ics/lichee_buildroot/blob/master/package/directfb/directfb-1.4.11-vmware.patch
32bpp color depth, 640x480 screen resolution
----------------------------------------------------------------------------------------------------------------------------------------
./df_dok --noaccel --system ./df_dok (G2D acceleration) pixman-0.28.0
----------------------------------------------------------------------------------------------------------------------------------------
Anti-aliased Text ( 271.765 KChars/sec) [100.0%] ( 139.840 KChars/sec) [100.0%]
Anti-aliased Text (blend) ( 49.202 KChars/sec) [100.0%] ( 33.455 KChars/sec) [100.0%]
Fill Rectangle ( 326.699 MPixel/sec) [100.3%] (* 200.442 MPixel/sec) [ 2.0%] 359.
@ssvb
ssvb / gist:4233089
Created December 7, 2012 12:55
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc-4.7.2
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.7.2/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-4.7.2/work/gcc-4.7.2/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.7.2 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.2/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.2 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.2/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.7.2/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.2/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --without-ppl --without-cloog --enable-lto --enable-nls --without-included-gettext --with-system-zlib --enable-obsolete --disable-werror --enable-secureplt --enable-multilib --with-multilib-list=m32,m64 --enable-libmudflap --disable-libssp --enable-libgomp --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.7.2/py
@ssvb
ssvb / gist:4426402
Created January 1, 2013 10:29
RetroArch with gl
# Overhead Command Shared Object Symbol
# ........ ......... .................. ...............................
#
38.75% retroarch libGL.so.1.5.08004 [.] linear_texel_locations
22.67% retroarch libGL.so.1.5.08004 [.] _swrast_texture_span
13.30% retroarch libGL.so.1.5.08004 [.] lerp_rgba_2d
7.53% retroarch libGL.so.1.5.08004 [.] shade_texture_span
6.75% retroarch libGL.so.1.5.08004 [.] fetch_texel_2d_f_rgba8888
5.96% retroarch libGL.so.1.5.08004 [.] sample_2d_linear.isra.27
0.85% retroarch libGL.so.1.5.08004 [.] pack_row_ubyte_ARGB8888