kernel.git/arch/nios2/kernel/prom.c, branch linux-4.18.y

nios2: remove arch specific early_init_dt_alloc_memory_arch

2018-01-30T17:17:12Z

Now that the DT core code handles bootmem arches, we can remove the nios2 specific early_init_dt_alloc_memory_arch function. Cc: Ley Foon Tan Cc: nios2-dev@lists.rocketboards.org Reviewed-by: Tobias Klauser Signed-off-by: Rob Herring

nios2: remove custom early console implementation

2017-05-11T09:44:21Z

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: reserve boot memory for device tree

2017-04-03T03:13:57Z

Make sure to reserve the boot memory for the flattened device tree. Otherwise it might get overwritten, e.g. when initial_boot_params is copied, leading to a corrupted FDT and a boot hang/crash: bootconsole [early0] enabled Early console on uart16650 initialized at 0xf8001600 OF: fdt: Error -11 processing FDT Kernel panic - not syncing: setup_cpuinfo: No CPU found in devicetree! ---[ end Kernel panic - not syncing: setup_cpuinfo: No CPU found in devicetree! Guenter Roeck says: > I think I found the problem. In unflatten_and_copy_device_tree(), with added > debug information: > > OF: fdt: initial_boot_params=c861e400, dt=c861f000 size=28874 (0x70ca) > > ... and then initial_boot_params is copied to dt, which results in corrupted > fdt since the memory overlaps. Looks like the initial_boot_params memory > is not reserved and (re-)allocated by early_init_dt_alloc_memory_arch(). Cc: stable@vger.kernel.org Reported-by: Guenter Roeck Reference: http://lkml.kernel.org/r/20170226210338.GA19476@roeck-us.net Tested-by: Guenter Roeck Signed-off-by: Tobias Klauser Acked-by: Ley Foon Tan

nios2: Replace fdt_translate_address with of_flat_dt_translate_address

2016-03-31T00:15:45Z

nios2 builds fail with the following build error. arch/nios2/kernel/prom.c: In function 'early_init_dt_scan_serial': arch/nios2/kernel/prom.c:100:2: error: implicit declaration of function 'fdt_translate_address' Commit c90fe9c0394b ("of: earlycon: Move address translation to of_setup_earlycon()") replaced fdt_translate_address() with of_flat_dt_translate_address() but missed updating the nios2 code. Fixes: c90fe9c0394b ("of: earlycon: Move address translation to of_setup_earlycon()") Cc: Peter Hurley Cc: Rob Herring Signed-off-by: Guenter Roeck Acked-by: Ley Foon Tan

nios2: add early printk support

2015-02-10T15:21:08Z

Signed-off-by: Ley Foon Tan

nios2: Device tree support

2014-12-08T04:56:01Z

Add device tree support to arch/nios2. Signed-off-by: Ley Foon Tan