summaryrefslogtreecommitdiffstats
path: root/kernel/arch/xtensa/boot
diff options
context:
space:
mode:
authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/xtensa/boot
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/xtensa/boot')
-rw-r--r--kernel/arch/xtensa/boot/boot-elf/boot.lds.S13
-rw-r--r--kernel/arch/xtensa/boot/boot-elf/bootstrap.S28
-rw-r--r--kernel/arch/xtensa/boot/dts/Makefile7
-rw-r--r--kernel/arch/xtensa/boot/dts/kc705_nommu.dts17
4 files changed, 23 insertions, 42 deletions
diff --git a/kernel/arch/xtensa/boot/boot-elf/boot.lds.S b/kernel/arch/xtensa/boot/boot-elf/boot.lds.S
index 958b33af9..e54f2c9df 100644
--- a/kernel/arch/xtensa/boot/boot-elf/boot.lds.S
+++ b/kernel/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/kernel/arch/xtensa/boot/boot-elf/bootstrap.S b/kernel/arch/xtensa/boot/boot-elf/bootstrap.S
index 9341a5750..e6bf31361 100644
--- a/kernel/arch/xtensa/boot/boot-elf/bootstrap.S
+++ b/kernel/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/kernel/arch/xtensa/boot/dts/Makefile b/kernel/arch/xtensa/boot/dts/Makefile
index 5f711bba8..a15e241c9 100644
--- a/kernel/arch/xtensa/boot/dts/Makefile
+++ b/kernel/arch/xtensa/boot/dts/Makefile
@@ -12,4 +12,9 @@ ifneq ($(CONFIG_BUILTIN_DTB),"")
obj-$(CONFIG_OF) += $(BUILTIN_DTB)
endif
-clean-files := *.dtb.S
+dtstree := $(srctree)/$(src)
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+
+always += $(dtb-y)
+clean-files += *.dtb *.dtb.S
+
diff --git a/kernel/arch/xtensa/boot/dts/kc705_nommu.dts b/kernel/arch/xtensa/boot/dts/kc705_nommu.dts
new file mode 100644
index 000000000..65f3d741b
--- /dev/null
+++ b/kernel/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>;
+ };
+};