user/sven/linux.git/arch/xtensa/kernel/setup.c, branch v4.4.118

xtensa: move parse_tag_fdt out of #ifdef CONFIG_BLK_DEV_INITRD

2017-03-15T01:57:14Z

commit 4ab18701c66552944188dbcd0ce0012729baab84 upstream. FDT tag parsing is not related to whether BLK_DEV_INITRD is configured or not, move it out of the corresponding #ifdef/#endif block. This fixes passing external FDT to the kernel configured w/o BLK_DEV_INITRD support. Signed-off-by: Max Filippov Signed-off-by: Greg Kroah-Hartman

xtensa: fix secondary core boot in SMP

2015-11-03T14:19:38Z

There are multiple factors adding to the issue in different configurations: - commit 17290231df16eeee ("xtensa: add fixup for double exception raised in window overflow") added function window_overflow_restore_a0_fixup to double exception vector overlapping reset vector location of secondary processor cores. - on MMUv2 cores RESET_VECTOR1_VADDR may point to uncached kernel memory making code overlapping depend on cache type and size, so that without cache or with WT cache reset vector code overwrites double exception code, making issue even harder to detect. - on MMUv3 cores RESET_VECTOR1_VADDR may point to unmapped area, as MMUv3 cores change virtual address map to match MMUv2 layout, but reset vector virtual address is given for the original MMUv3 mapping. - physical memory region of the secondary reset vector is not reserved in the physical memory map, and thus may be allocated and overwritten at arbitrary moment. Fix it as follows: - move window_overflow_restore_a0_fixup code to .text section. - define RESET_VECTOR1_VADDR so that it points to reset vector in the cacheable MMUv2 map for cores with MMU. - reserve reset vector region in the physical memory map. Drop separate literal section and build mxhead.S with text section literals. Cc: Signed-off-by: Max Filippov

xtensa: nommu: provide correct KIO addresses

2015-11-02T15:03:02Z

KIO region location is different for noMMU cores. Provide different default physical address and make KIO virtual address equal to physical. Move xtensa_get_kio_paddr function close to XCHAL_KIO_PADDR definition and define it not only for MMUv3, but for all MMU options except MMUv2. Signed-off-by: Max Filippov

xtensa: use %*pb[l] to print bitmaps including cpumasks and nodemasks

2015-02-14T05:21:37Z

printk and friends can now format bitmaps using '%*pb[l]'. cpumask and nodemask also provide cpumask_pr_args() and nodemask_pr_args() respectively which can be used to generate the two printf arguments necessary to format the specified cpu/nodemask. Signed-off-by: Tejun Heo Cc: Chris Zankel Cc: Max Filippov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'dt-bus-name' into for-next

2014-05-13T23:34:35Z

of/fdt: update of_get_flat_dt_prop in prep for libfdt

2014-04-30T05:59:15Z

Make of_get_flat_dt_prop arguments compatible with libfdt fdt_getprop call in preparation to convert FDT code to use libfdt. Make the return value const and the property length ptr type an int. Signed-off-by: Rob Herring Tested-by: Michal Simek Tested-by: Grant Likely Tested-by: Stephen Chivers

of/fdt: consolidate built-in dtb section variables

2014-04-30T05:59:13Z

Unify the various architectures __dtb_start and __dtb_end definitions moving them into of_fdt.h. Signed-off-by: Rob Herring Acked-by: Vineet Gupta Acked-by: James Hogan Tested-by: Michal Simek Cc: Ralf Baechle Cc: Jonas Bonn Cc: Chris Zankel Cc: Max Filippov Cc: linux-metag@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux@lists.openrisc.net Cc: linux-xtensa@linux-xtensa.org Tested-by: Grant Likely Tested-by: Stephen Chivers

xtensa: handle memmap kernel option

2014-04-01T21:35:54Z

This option is useful for reserving memory regions for secondary cores in AMP configurations. Implement the following memmap variants: - memmap=nn[KMG]@ss[KMG]: force usage of a specific region of memory; - memmap=nn[KMG]$ss[KMG]: mark specified memory as reserved; - memmap=nn[KMG]: set end of memory. Signed-off-by: Max Filippov

xtensa: keep sysmem banks ordered in mem_reserve

2014-04-01T21:35:53Z

Rewrite mem_reserve so that it keeps bank order. Also make its return code more traditional. Signed-off-by: Max Filippov

xtensa: split bootparam and kernel meminfo

2014-04-01T21:35:51Z

Bootparam meminfo is a bootloader ABI, kernel meminfo is for the kernel bookkeeping, keep them separate. Kernel doesn't care of memory region types, so drop the type field and don't pass it to add_sysmem_bank. Move kernel sysmem structures and prototypes to asm/sysmem.h and sysmem variable and add_sysmem_bank to mm/init.c Signed-off-by: Max Filippov