linux.git/arch/nios2/kernel/setup.c, branch v6.0

NIOS2: setup.c: drop unused variable 'dram_start'

2021-09-27T13:34:54+00:00

This is a nuisance when CONFIG_WERROR is set, so drop the variable
declaration since the code that used it was removed.

../arch/nios2/kernel/setup.c: In function 'setup_arch':
../arch/nios2/kernel/setup.c:152:13: warning: unused variable 'dram_start' [-Wunused-variable]
  152 |         int dram_start;

Fixes: 7f7bc20bc41a ("nios2: Don't use _end for calculating min_low_pfn")
Signed-off-by: Randy Dunlap 
Reported-by: kernel test robot 
Reviewed-by: Mike Rapoport 
Cc: Andreas Oetken 
Signed-off-by: Dinh Nguyen

nios2: convert to setup_initial_init_mm()

2021-07-08T18:48:21+00:00

Use setup_initial_init_mm() helper to simplify code.

Link: https://lkml.kernel.org/r/20210608083418.137226-10-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang 
Cc: Ley Foon Tan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

nios2: Don't use _end for calculating min_low_pfn

2021-02-19T07:02:09+00:00

If there is a initramfs linked into the kernel which will be
freed later on there is free memory somewhere between _etext
and _end, thus using _end for min_low_pfn is not correct.
This may lead to issues in dma_capable when checking
'min(addr, end) < phys_to_dma(dev, PFN_PHYS(min_low_pfn)))'
as the address addr might be below min_low_pfn. Picked
find_limits from architecture arm for applying min_low_pfn and
max_low_pfn. Maybe using _etext for min_low_pfn would be
fine too.

Signed-off-by: Andreas Oetken 
Signed-off-by: Ley Foon Tan

arch/nios2/setup: Drop dummy_con initialization

2020-01-14T14:29:17+00:00

con_init in tty/vt.c will now set conswitchp to dummy_con if it's unset.
Drop it from arch setup code.

Signed-off-by: Arvind Sankar 
Link: https://lore.kernel.org/r/20191218214506.49252-15-nivedita@alum.mit.edu
Signed-off-by: Greg Kroah-Hartman

nios2: force the string buffer NULL-terminated

2019-09-20T06:55:57+00:00

strncpy() does not ensure NULL-termination when the input string
size equals to the destination buffer size COMMAND_LINE_SIZE.
Besides, grep under arch/ with 'boot_command_line' shows
no other arch-specific code uses strncpy() when copying
boot_command_line.

Use strlcpy() instead.

This issue is identified by a Coccinelle script.

Signed-off-by: Wang Xiayang 
Signed-off-by: Ley Foon Tan

mm: remove include/linux/bootmem.h

2018-10-31T15:54:16+00:00

Move remaining definitions and declarations from include/linux/bootmem.h
into include/linux/memblock.h and remove the redundant header.

The includes were replaced with the semantic patch below and then
semi-automated removal of duplicated '#include 

@@
@@
- #include 
+ #include 

[sfr@canb.auug.org.au: dma-direct: fix up for the removal of linux/bootmem.h]
  Link: http://lkml.kernel.org/r/20181002185342.133d1680@canb.auug.org.au
[sfr@canb.auug.org.au: powerpc: fix up for removal of linux/bootmem.h]
  Link: http://lkml.kernel.org/r/20181005161406.73ef8727@canb.auug.org.au
[sfr@canb.auug.org.au: x86/kaslr, ACPI/NUMA: fix for linux/bootmem.h removal]
  Link: http://lkml.kernel.org/r/20181008190341.5e396491@canb.auug.org.au
Link: http://lkml.kernel.org/r/1536927045-23536-30-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport 
Signed-off-by: Stephen Rothwell 
Acked-by: Michal Hocko 
Cc: Catalin Marinas 
Cc: Chris Zankel 
Cc: "David S. Miller" 
Cc: Geert Uytterhoeven 
Cc: Greentime Hu 
Cc: Greg Kroah-Hartman 
Cc: Guan Xuetao 
Cc: Ingo Molnar 
Cc: "James E.J. Bottomley" 
Cc: Jonas Bonn 
Cc: Jonathan Corbet 
Cc: Ley Foon Tan 
Cc: Mark Salter 
Cc: Martin Schwidefsky 
Cc: Matt Turner 
Cc: Michael Ellerman 
Cc: Michal Simek 
Cc: Palmer Dabbelt 
Cc: Paul Burton 
Cc: Richard Kuo 
Cc: Richard Weinberger 
Cc: Rich Felker 
Cc: Russell King 
Cc: Serge Semin 
Cc: Thomas Gleixner 
Cc: Tony Luck 
Cc: Vineet Gupta 
Cc: Yoshinori Sato 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

nios2: switch to NO_BOOTMEM

2018-10-26T23:25:20+00:00

Remove bootmem bitmap initialization and replace reserve_bootmem() with
memblock_reserve().

Link: http://lkml.kernel.org/r/1533326330-31677-5-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport 
Acked-by: Ley Foon Tan 
Cc: Guan Xuetao 
Cc: Richard Kuo 
Cc: Richard Weinberger 
Cc: Rob Herring 
Cc: Michal Hocko 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

nios2: use generic early_init_dt_add_memory_arch

2018-10-26T23:25:20+00:00

All we have to do is to enable memblock, the generic FDT code will take
care of the rest.

Link: http://lkml.kernel.org/r/1533326330-31677-4-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport 
Acked-by: Ley Foon Tan 
Cc: Guan Xuetao 
Cc: Richard Kuo 
Cc: Richard Weinberger 
Cc: Rob Herring 
Cc: Michal Hocko 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

nios2: remove custom early console implementation

2017-05-11T09:44:21+00:00

As of commits d8f347ba35cf ("nios2: enable earlycon support"),
0dcc0542a006 ("serial: altera_jtaguart: add earlycon support") and
4d9d7d896d77 ("serial: altera_uart: add earlycon support"), the nios2
architecture and the altera_uart/altera_jtaguart drivers support
earlycon. Thus, the custom early console implementation for nios2 is no
longer necessary to get early boot messages. Remove it and rely fully on
earlycon support.

Signed-off-by: Tobias Klauser

nios2: enable earlycon support

2017-05-08T08:59:19+00:00

Enable generic earlycon support for nios2. This e.g. allows to use a
8250/16650 UART as earlycon.

In order to get the earlycon, we just need to call parse_early_param()
in early_init_devtree() as soon as the device tree is initially scanned.
By adding an stdout-path property to the dts (done in this patch for
10m50_devboard), the earlycon can be used.

In order to provide early printk support, we need to provide a dummy
implementation of early_console_write(), so that
arch/nios2/kernel/early_printk.c can still be compiled if neither
SERIAL_ALTERA_JTAGUART_CONSOLE nor SERIAL_ALTERA_UART_CONSOLE is
selected. As soon as the altera_uart and altera_jtaguart support
earlycon, the entire file can be removed.

Tested-by: Guenter Roeck 
Signed-off-by: Tobias Klauser 
Acked-by: Ley Foon Tan