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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-10 03:32:13 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-10 03:32:13 +0300
commit3510ca19a82ba4c6a17af79c1f0448622a406efa (patch)
tree79b9e734100e40f379e9b4c3c50d261c3cdc2fa8 /arch/xtensa/boot
parente4da7e9a54649d6877ac23828ff93ce7191eae2c (diff)
parentafaa7c542cc9c4d8a99ba252a8ea5e8bc7c897e2 (diff)
downloadlinux-3510ca19a82ba4c6a17af79c1f0448622a406efa.tar.xz
Merge tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux
Pull xtensa updates from Chris Zankel: - fix remaining issues with noMMU cores - fix build for cores w/o cache or zero overhead loop options - fix boot of secondary cores in SMP configuration - add support for DMA to high memory pages - add dma_to_phys and phys_to_dma functions. * tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux: xtensa: implement dma_to_phys and phys_to_dma xtensa: support DMA to high memory Revert "xtensa: cache inquiry and unaligned cache handling functions" xtensa: drop unused sections and remapped reset handlers xtensa: fix secondary core boot in SMP xtensa: add FORCE_MAX_ZONEORDER to Kconfig xtensa: nommu: provide defconfig for de212 on kc705 xtensa: nommu: xtfpga: add kc705 DTS xtensa: add de212 core variant xtensa: nommu: select HAVE_FUTEX_CMPXCHG xtensa: nommu: fix default memory start address xtensa: nommu: provide correct KIO addresses xtensa: nommu: fix USER_RING definition xtensa: xtfpga: fix integer overflow in TASK_SIZE xtensa: fix build for configs without cache options xtensa: fixes for configs without loop option
Diffstat (limited to 'arch/xtensa/boot')
-rw-r--r--arch/xtensa/boot/boot-elf/boot.lds.S13
-rw-r--r--arch/xtensa/boot/boot-elf/bootstrap.S28
-rw-r--r--arch/xtensa/boot/dts/kc705_nommu.dts17
3 files changed, 17 insertions, 41 deletions
diff --git a/arch/xtensa/boot/boot-elf/boot.lds.S b/arch/xtensa/boot/boot-elf/boot.lds.S
index 958b33af96b7..e54f2c9df63a 100644
--- a/arch/xtensa/boot/boot-elf/boot.lds.S
+++ b/arch/xtensa/boot/boot-elf/boot.lds.S
@@ -40,17 +40,4 @@ SECTIONS
*(.bss)
__bss_end = .;
}
-
-#ifdef CONFIG_MMU
- /*
- * This is a remapped copy of the Reset Vector Code.
- * It keeps gdb in sync with the PC after switching
- * to the temporary mapping used while setting up
- * the V2 MMU mappings for Linux.
- */
- .ResetVector.remapped_text 0x46000000 (INFO):
- {
- *(.ResetVector.remapped_text)
- }
-#endif
}
diff --git a/arch/xtensa/boot/boot-elf/bootstrap.S b/arch/xtensa/boot/boot-elf/bootstrap.S
index 9341a5750694..e6bf313613cf 100644
--- a/arch/xtensa/boot/boot-elf/bootstrap.S
+++ b/arch/xtensa/boot/boot-elf/bootstrap.S
@@ -58,8 +58,6 @@ _SetupMMU:
wsr a0, ps
rsync
- Offset = _SetupMMU - _ResetVector
-
#ifndef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
initialize_mmu
#endif
@@ -74,29 +72,3 @@ reset:
movi a3, 0
movi a4, 0
jx a0
-
-#ifdef CONFIG_MMU
- .align 4
-
- .section .ResetVector.remapped_text, "x"
- .global _RemappedResetVector
-
- /* Do org before literals */
- .org 0
-
-_RemappedResetVector:
- .begin no-absolute-literals
- .literal_position
-
- _j _RemappedSetupMMU
-
- /* Position Remapped code at the same location as the original code */
- . = _RemappedResetVector + Offset
-
-_RemappedSetupMMU:
-#ifndef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
- initialize_mmu
-#endif
-
- .end no-absolute-literals
-#endif
diff --git a/arch/xtensa/boot/dts/kc705_nommu.dts b/arch/xtensa/boot/dts/kc705_nommu.dts
new file mode 100644
index 000000000000..65f3d741b964
--- /dev/null
+++ b/arch/xtensa/boot/dts/kc705_nommu.dts
@@ -0,0 +1,17 @@
+/dts-v1/;
+/include/ "xtfpga.dtsi"
+/include/ "xtfpga-flash-128m.dtsi"
+
+/ {
+ compatible = "cdns,xtensa-kc705";
+ chosen {
+ bootargs = "earlycon=uart8250,mmio32,0x9d050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug";
+ };
+ memory@0 {
+ device_type = "memory";
+ reg = <0x60000000 0x10000000>;
+ };
+ soc {
+ ranges = <0x00000000 0x90000000 0x10000000>;
+ };
+};