BMC/Intel-BMC/linux.git/arch/sh/boot/compressed/head_32.S, branch devIntel OpenBMC Linux kernel source tree (mirror)https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=dev2010-09-30T00:43:32+00:00sh: boot kernel with SR.BL set2010-09-30T00:43:32+00:00Magnus Dammdamm@opensource.se2010-09-24T09:05:38+00:00urn:sha1:68a1aed7039e5a94a8e60e23fdf676738c36086a
Update the SH kernel to keep SR.BL set until the VBR
register has been initialized. Useful to allow boot
of the kernel even though exceptions are pending.
Without this patch there is a window of time when
exceptions such as NMI are enabled but no exception
handlers are installed.
This patch modifies both the zImage loader and the
actual kernel to boot with BL=1, but the zImage
loader is modfied in such a way that the init_sr
value is unchanged to not break the zImage loader
provided by kexec.
Tested on sh7724 Ecovec and on the SH4AL-DSP core
included in sh7372.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Fix address to decompress at when CONFIG_32BIT=y2010-04-25T19:44:23+00:00Matt Flemingmatt@console-pimps.org2010-04-24T12:28:20+00:00urn:sha1:b161313ae8d9c64de589d1de72f975210ce37b48
When running in 32BIT mode the P1SEG region doesn't necessarily provide
a window onto RAM (it depends how the bootloader setup the PMB). The
correct location to place the decompressed kernel is the physical
address of _text.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
sh: Remove implicit sign extension from assembler immediates2009-08-24T08:09:53+00:00Stuart Menefystuart.menefy@st.com2009-08-24T08:09:53+00:00urn:sha1:fea966f7564205fcf5919af9bde031e753419c96
The SH instruction set has several instructions which accept an 8 bit
immediate operand. For logical instructions this operand is zero extended,
for arithmetic instructions the operand is sign extended. After adding an
option to the assembler to check this, it was found that several pieces
of assembly code were assuming this behaviour, and in one case
getting it wrong.
So this patch explicitly sign extends any immediate operands, which makes
it obvious what is happening, and fixes the one case which got it wrong.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: fix compressed kernel build2008-04-15T17:01:55+00:00Manuel Laussmano@roarinelk.homelinux.net2008-04-15T17:01:55+00:00urn:sha1:85eee6072bae69acfab903df596b5f468df03470
commit 54a015104136974262afa4b8ddd943ea70dec8a2 broke zImage build on sh arch:
LD vmlinux
SYSMAP System.map
SYSMAP .tmp_System.map
AS arch/sh/boot/compressed/head_32.o
In file included from /k/arch/sh/boot/compressed/head_32.S:11:
/k/include/linux/linkage.h:34: error: syntax error in macro parameter list
Fix it for both sh and sh64.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh: Merge the sh64 zImage bits.2008-01-28T04:18:52+00:00Paul Mundtlethal@linux-sh.org2007-11-21T07:53:37+00:00urn:sha1:71373068067b01c963eed1350909de81fc6a6d04
Signed-off-by: Paul Mundt <lethal@linux-sh.org>