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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-16 12:17:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-16 12:17:07 -0700
commit3e859477a1db52a0435d06a55fdb54f62d69c292 (patch)
tree057daeae3cc56a459ef5534b8c6cce8181c0c662 /arch/xtensa/boot
parent1ec4013bab89058dcc594dfe7b5a20f5d46bbc5f (diff)
parent775f1f7eacede583ec25ed56e58c4483f2b29265 (diff)
Merge tag 'xtensa-20190715' of git://github.com/jcmvbkbc/linux-xtensa
Pull Xtensa updates from Max Filippov: - clean up PCI support code - add defconfig and DTS for the 'virt' board - abstract 'entry' and 'retw' uses in xtensa assembly in preparation for XEA3/NX pipeline support - random small cleanups * tag 'xtensa-20190715' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: virt: add defconfig and DTS xtensa: abstract 'entry' and 'retw' in assembly code xtensa: One function call less in bootmem_init() xtensa: remove arch/xtensa/include/asm/types.h xtensa: use generic pcibios_set_master and pcibios_enable_device xtensa: drop dead PCI support code xtensa/PCI: Remove unused variable
Diffstat (limited to 'arch/xtensa/boot')
-rw-r--r--arch/xtensa/boot/dts/virt.dts72
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/xtensa/boot/dts/virt.dts b/arch/xtensa/boot/dts/virt.dts
new file mode 100644
index 000000000000..6aecbc0f3549
--- /dev/null
+++ b/arch/xtensa/boot/dts/virt.dts
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+/ {
+ compatible = "cdns,xtensa-iss";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ interrupt-parent = <&pic>;
+
+ chosen {
+ bootargs = "console=ttyS0,115200n8 debug";
+ };
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x00000000 0x80000000>;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ cpu@0 {
+ compatible = "cdns,xtensa-cpu";
+ reg = <0>;
+ clocks = <&osc>;
+ };
+ };
+
+ clocks {
+ osc: osc {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <40000000>;
+ };
+ };
+
+ pic: pic {
+ compatible = "cdns,xtensa-pic";
+ /* one cell: internal irq number,
+ * two cells: second cell == 0: internal irq number
+ * second cell == 1: external irq number
+ */
+ #address-cells = <0>;
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ };
+
+ pci {
+ compatible = "pci-host-ecam-generic";
+ device_type = "pci";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ #interrupt-cells = <0x1>;
+
+ bus-range = <0x0 0x3f>;
+ reg = <0xc0000000 0x04000000>;
+
+ // BUS_ADDRESS(3) CPU_PHYSICAL(1) SIZE(2)
+ ranges = <0x01000000 0x0 0xc4000000 0xc4000000 0x0 0x04000000>,
+ <0x02000000 0x0 0xc8000000 0xc8000000 0x0 0x18000000>;
+
+ // PCI_DEVICE(3) INT#(1) CONTROLLER(PHANDLE) CONTROLLER_DATA(2)
+ interrupt-map = <
+ 0x0000 0x0 0x0 0x1 &pic 0x0 0x1
+ 0x0800 0x0 0x0 0x1 &pic 0x1 0x1
+ 0x1000 0x0 0x0 0x1 &pic 0x2 0x1
+ 0x1800 0x0 0x0 0x1 &pic 0x3 0x1
+ >;
+
+ interrupt-map-mask = <0x1800 0x0 0x0 0x7>;
+ };
+};