linux-toradex.git/arch/mips/boot, branch v4.2.7

lib/decompressors: use real out buf size for gunzip with kernel

2015-09-29T17:33:37+00:00

commit 2d3862d26e67a59340ba1cf1748196c76c5787de upstream.

When loading x86 64bit kernel above 4GiB with patched grub2, got kernel
gunzip error.

| early console in decompress_kernel
| decompress_kernel:
|       input: [0x807f2143b4-0x807ff61aee]
|      output: [0x807cc00000-0x807f3ea29b] 0x027ea29c: output_len
| boot via startup_64
| KASLR using RDTSC...
|  new output: [0x46fe000000-0x470138cfff] 0x0338d000: output_run_size
|  decompress: [0x46fe000000-0x47007ea29b] <=== [0x807f2143b4-0x807ff61aee]
|
| Decompressing Linux... gz...
|
| uncompression error
|
| -- System halted

the new buffer is at 0x46fe000000ULL, decompressor_gzip is using
0xffffffb901ffffff as out_len.  gunzip in lib/zlib_inflate/inflate.c cap
that len to 0x01ffffff and decompress fails later.

We could hit this problem with crashkernel booting that uses kexec loading
kernel above 4GiB.

We have decompress_* support:
    1. inbuf[]/outbuf[] for kernel preboot.
    2. inbuf[]/flush() for initramfs
    3. fill()/flush() for initrd.
This bug only affect kernel preboot path that use outbuf[].

Add __decompress and take real out_buf_len for gunzip instead of guessing
wrong buf size.

Fixes: 1431574a1c4 (lib/decompressors: fix "no limit" output buffer length)
Signed-off-by: Yinghai Lu 
Cc: Alexandre Courbot 
Cc: Jon Medhurst 
Cc: Stephen Warren 
Cc: "H. Peter Anvin" 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

MIPS: Malta: Basic DT plumbing

2015-06-21T19:54:29+00:00

Build a DT for the Malta platform into the kernel, load it & probe
devices from it. The DT is essentially empty at this point, devices
will be added in further patches.

[ralf@linux-mips.org: Fixed conflicts.]

Signed-off-by: Paul Burton 
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: Rob Herring 
Cc: Pawel Moll 
Cc: Mark Rutland 
Cc: Ian Campbell 
Cc: Kumar Gala 
Cc: Andrew Bresticker 
Cc: linux-kernel@vger.kernel.org
Cc: Markos Chandras 
Patchwork: http://patchwork.linux-mips.org/patch/10119/
Signed-off-by: Ralf Baechle

MIPS: BMIPS: Build all dtbs if no builtin dtb

2015-06-21T19:54:16+00:00

Build all available dtbs to allow them to be appended to the resulting
kernel in case there is no builtin dtb.

Signed-off-by: Jonas Gorski 
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: John Crispin 
Cc: Kevin Cernekee 
Cc: Florian Fainelli 
Cc: Aaro Koskinen 
Cc: Markos Chandras 
Cc: Andrew Bresticker 
Cc: Daniel Schwierzeck 
Cc: Paul Burton 
Cc: James Hartley 
Patchwork: https://patchwork.linux-mips.org/patch/9740/
Signed-off-by: Ralf Baechle

MIPS: Add support for vmlinuz.bin appended dtb

2015-06-21T19:54:15+00:00

Add support for detecting a vmlinuz.bin appended dtb and overriding
the boot arguments to match the UHI interface.

To ensure _edata / __apendend_dtb points to the actual end of the
binary, align the data section to 16 bytes instead of the address
cursor.

Due to ld.script not going through the preprocessor, we can't check
for MIPS_ZBOOT_APPENDED_DTB being enabled, so always reserve space
for it. It should have no consequences for booting without it enabled
except 1 MiB more ram usage during the uncompressing stage.

Signed-off-by: Jonas Gorski 
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: John Crispin 
Cc: Kevin Cernekee 
Cc: Florian Fainelli 
Cc: Aaro Koskinen 
Cc: Markos Chandras 
Cc: Andrew Bresticker 
Cc: Daniel Schwierzeck 
Cc: Paul Burton 
Cc: James Hartley 
Patchwork: https://patchwork.linux-mips.org/patch/9741/
Signed-off-by: Ralf Baechle

MIPS: Add basic support for the TL-WR1043ND version 1

2015-06-21T19:54:10+00:00

Add a DTS for TL-WR1043ND version 1 and allow to have it built in the
kernel to circumvent the broken u-boot found on these boards.
Currently only the UART, LEDs and buttons are supported.

Signed-off-by: Alban Bedel 
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle

MIPS: Loongson: Naming style cleanup and rework

2015-06-21T19:53:59+00:00

Currently, code of Loongson-2/3 is under loongson directory and code of
Loongson-1 is under loongson1 directory. Besides, there are Kconfig
options such as MACH_LOONGSON and MACH_LOONGSON1. This naming style is
very ugly and confusing. Since Loongson-2/3 are both 64-bit general-
purpose CPU while Loongson-1 is 32-bit SoC, we rename both file names
and Kconfig symbols from loongson/loongson1 to loongson64/loongson32.

[ralf@linux-mips.org: Resolve a number of simple conflicts.]

Signed-off-by: Huacai Chen 
Cc: Steven J. Hill 
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang 
Cc: Zhangjin Wu 
Cc: Kelvin Cheung 
Patchwork: https://patchwork.linux-mips.org/patch/9790/
Signed-off-by: Ralf Baechle

MIPS: BMIPS: dts: Add uart device nodes to bcm7xxx platforms

2015-06-21T19:53:35+00:00

Add two uart device nodes known as the uart1 and uart2 for the bcm7xxx
platforms.

Signed-off-by: Jaedon Shin 
Cc: Kevin Cernekee 
Cc: Florian Fainelli 
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9991/
Signed-off-by: Ralf Baechle

MIPS: BMIPS: Add support for Broadcom BCM97435SVMB

2015-06-21T19:53:34+00:00

Add a DTS file and Kconfig entry for the BCM97435SVMB evaluation board
using bcm7435.dtsi as an example.

The current code needs some tweaking to allow us to use the
dual-threaded dual BMIPS5200 CPUs, so for now we limit ourselves to
allowing just a single CPU to be booted.

Signed-off-by: Florian Fainelli 
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: cernekee@chromium.org
Cc: Steven.Hill@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/9972/
Signed-off-by: Ralf Baechle

MIPS: BMIPS: Add BCM7435 dtsi

2015-06-21T19:53:32+00:00

Add the bare minimum required to boot a BCM7435-based system:

- BMIPS5200 CPU nodes
- Level 1 and 2 interrupt controllers
- UARTs
- EHCI/OHCI controllers

Signed-off-by: Florian Fainelli 
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: cernekee@chromium.org
Cc: Steven.Hill@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/9971/
Signed-off-by: Ralf Baechle

MIPS: ingenic: Initial MIPS Creator CI20 support

2015-06-21T19:53:28+00:00

Add an initial device tree for the Ingenic JZ4780 based MIPS Creator
CI20 board.

Signed-off-by: Paul Burton 
Cc: Ian Campbell 
Cc: Kumar Gala 
Cc: Lars-Peter Clausen 
Cc: Mark Rutland 
Cc: Pawel Moll 
Cc: Rob Herring 
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker 
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10162/
Signed-off-by: Ralf Baechle