84d727a109
This adds support for ISA memory holes on the PCI, PCI-X and PCI-E busses of the 4xx platforms. The patch includes changes to the Bamboo and Canyonlands device-trees to add such a hole, others can be updated separately. The ISA memory hole is an additional outbound window configured in the bridge to generate PCI cycles in the low memory addresses, thus allowing to access things such as the hard-decoded VGA aperture at 0xa0000..0xbffff or other similar things. It's made accessible to userspace via the new legacy_mem file in sysfs for which support was added by a previous patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
300 lines
7.6 KiB
Text
300 lines
7.6 KiB
Text
/*
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* Device Tree Source for AMCC Bamboo
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*
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* Copyright (c) 2006, 2007 IBM Corp.
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* Josh Boyer <jwboyer@linux.vnet.ibm.com>
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*
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* FIXME: Draft only!
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without
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* any warranty of any kind, whether express or implied.
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*/
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/dts-v1/;
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/ {
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#address-cells = <2>;
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#size-cells = <1>;
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model = "amcc,bamboo";
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compatible = "amcc,bamboo";
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dcr-parent = <&{/cpus/cpu@0}>;
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aliases {
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ethernet0 = &EMAC0;
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ethernet1 = &EMAC1;
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serial0 = &UART0;
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serial1 = &UART1;
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serial2 = &UART2;
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serial3 = &UART3;
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};
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cpus {
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#address-cells = <1>;
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#size-cells = <0>;
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cpu@0 {
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device_type = "cpu";
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model = "PowerPC,440EP";
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reg = <0x00000000>;
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clock-frequency = <0>; /* Filled in by zImage */
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timebase-frequency = <0>; /* Filled in by zImage */
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i-cache-line-size = <32>;
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d-cache-line-size = <32>;
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i-cache-size = <32768>;
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d-cache-size = <32768>;
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dcr-controller;
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dcr-access-method = "native";
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};
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};
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memory {
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device_type = "memory";
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reg = <0x00000000 0x00000000 0x00000000>; /* Filled in by zImage */
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};
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UIC0: interrupt-controller0 {
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compatible = "ibm,uic-440ep","ibm,uic";
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interrupt-controller;
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cell-index = <0>;
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dcr-reg = <0x0c0 0x009>;
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#address-cells = <0>;
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#size-cells = <0>;
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#interrupt-cells = <2>;
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};
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UIC1: interrupt-controller1 {
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compatible = "ibm,uic-440ep","ibm,uic";
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interrupt-controller;
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cell-index = <1>;
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dcr-reg = <0x0d0 0x009>;
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#address-cells = <0>;
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#size-cells = <0>;
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#interrupt-cells = <2>;
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interrupts = <0x1e 0x4 0x1f 0x4>; /* cascade */
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interrupt-parent = <&UIC0>;
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};
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SDR0: sdr {
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compatible = "ibm,sdr-440ep";
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dcr-reg = <0x00e 0x002>;
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};
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CPR0: cpr {
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compatible = "ibm,cpr-440ep";
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dcr-reg = <0x00c 0x002>;
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};
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plb {
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compatible = "ibm,plb-440ep", "ibm,plb-440gp", "ibm,plb4";
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#address-cells = <2>;
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#size-cells = <1>;
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ranges;
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clock-frequency = <0>; /* Filled in by zImage */
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SDRAM0: sdram {
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compatible = "ibm,sdram-440ep", "ibm,sdram-405gp";
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dcr-reg = <0x010 0x002>;
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};
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DMA0: dma {
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compatible = "ibm,dma-440ep", "ibm,dma-440gp";
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dcr-reg = <0x100 0x027>;
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};
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MAL0: mcmal {
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compatible = "ibm,mcmal-440ep", "ibm,mcmal-440gp", "ibm,mcmal";
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dcr-reg = <0x180 0x062>;
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num-tx-chans = <4>;
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num-rx-chans = <2>;
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interrupt-parent = <&MAL0>;
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interrupts = <0x0 0x1 0x2 0x3 0x4>;
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#interrupt-cells = <1>;
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#address-cells = <0>;
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#size-cells = <0>;
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interrupt-map = </*TXEOB*/ 0x0 &UIC0 0xa 0x4
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/*RXEOB*/ 0x1 &UIC0 0xb 0x4
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/*SERR*/ 0x2 &UIC1 0x0 0x4
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/*TXDE*/ 0x3 &UIC1 0x1 0x4
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/*RXDE*/ 0x4 &UIC1 0x2 0x4>;
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};
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POB0: opb {
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compatible = "ibm,opb-440ep", "ibm,opb-440gp", "ibm,opb";
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#address-cells = <1>;
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#size-cells = <1>;
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/* Bamboo is oddball in the 44x world and doesn't use the ERPN
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* bits.
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*/
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ranges = <0x00000000 0x00000000 0x00000000 0x80000000
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0x80000000 0x00000000 0x80000000 0x80000000>;
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interrupt-parent = <&UIC1>;
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interrupts = <0x7 0x4>;
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clock-frequency = <0>; /* Filled in by zImage */
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EBC0: ebc {
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compatible = "ibm,ebc-440ep", "ibm,ebc-440gp", "ibm,ebc";
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dcr-reg = <0x012 0x002>;
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#address-cells = <2>;
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#size-cells = <1>;
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clock-frequency = <0>; /* Filled in by zImage */
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interrupts = <0x5 0x1>;
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interrupt-parent = <&UIC1>;
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};
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UART0: serial@ef600300 {
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device_type = "serial";
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compatible = "ns16550";
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reg = <0xef600300 0x00000008>;
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virtual-reg = <0xef600300>;
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clock-frequency = <0>; /* Filled in by zImage */
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current-speed = <115200>;
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interrupt-parent = <&UIC0>;
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interrupts = <0x0 0x4>;
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};
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UART1: serial@ef600400 {
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device_type = "serial";
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compatible = "ns16550";
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reg = <0xef600400 0x00000008>;
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virtual-reg = <0xef600400>;
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clock-frequency = <0>;
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current-speed = <0>;
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interrupt-parent = <&UIC0>;
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interrupts = <0x1 0x4>;
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};
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UART2: serial@ef600500 {
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device_type = "serial";
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compatible = "ns16550";
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reg = <0xef600500 0x00000008>;
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virtual-reg = <0xef600500>;
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clock-frequency = <0>;
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current-speed = <0>;
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interrupt-parent = <&UIC0>;
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interrupts = <0x3 0x4>;
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};
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UART3: serial@ef600600 {
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device_type = "serial";
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compatible = "ns16550";
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reg = <0xef600600 0x00000008>;
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virtual-reg = <0xef600600>;
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clock-frequency = <0>;
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current-speed = <0>;
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interrupt-parent = <&UIC0>;
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interrupts = <0x4 0x4>;
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};
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IIC0: i2c@ef600700 {
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compatible = "ibm,iic-440ep", "ibm,iic-440gp", "ibm,iic";
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reg = <0xef600700 0x00000014>;
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interrupt-parent = <&UIC0>;
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interrupts = <0x2 0x4>;
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};
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IIC1: i2c@ef600800 {
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compatible = "ibm,iic-440ep", "ibm,iic-440gp", "ibm,iic";
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reg = <0xef600800 0x00000014>;
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interrupt-parent = <&UIC0>;
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interrupts = <0x7 0x4>;
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};
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ZMII0: emac-zmii@ef600d00 {
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compatible = "ibm,zmii-440ep", "ibm,zmii-440gp", "ibm,zmii";
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reg = <0xef600d00 0x0000000c>;
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};
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EMAC0: ethernet@ef600e00 {
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device_type = "network";
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compatible = "ibm,emac-440ep", "ibm,emac-440gp", "ibm,emac";
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interrupt-parent = <&UIC1>;
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interrupts = <0x1c 0x4 0x1d 0x4>;
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reg = <0xef600e00 0x00000070>;
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local-mac-address = [000000000000];
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mal-device = <&MAL0>;
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mal-tx-channel = <0 1>;
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mal-rx-channel = <0>;
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cell-index = <0>;
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max-frame-size = <1500>;
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rx-fifo-size = <4096>;
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tx-fifo-size = <2048>;
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phy-mode = "rmii";
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phy-map = <0x00000000>;
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zmii-device = <&ZMII0>;
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zmii-channel = <0>;
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};
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EMAC1: ethernet@ef600f00 {
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device_type = "network";
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compatible = "ibm,emac-440ep", "ibm,emac-440gp", "ibm,emac";
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interrupt-parent = <&UIC1>;
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interrupts = <0x1e 0x4 0x1f 0x4>;
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reg = <0xef600f00 0x00000070>;
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local-mac-address = [000000000000];
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mal-device = <&MAL0>;
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mal-tx-channel = <2 3>;
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mal-rx-channel = <1>;
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cell-index = <1>;
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max-frame-size = <1500>;
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rx-fifo-size = <4096>;
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tx-fifo-size = <2048>;
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phy-mode = "rmii";
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phy-map = <0x00000000>;
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zmii-device = <&ZMII0>;
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zmii-channel = <1>;
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};
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usb@ef601000 {
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compatible = "ohci-be";
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reg = <0xef601000 0x00000080>;
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interrupts = <0x8 0x1 0x9 0x1>;
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interrupt-parent = < &UIC1 >;
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};
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};
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PCI0: pci@ec000000 {
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device_type = "pci";
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#interrupt-cells = <1>;
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#size-cells = <2>;
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#address-cells = <3>;
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compatible = "ibm,plb440ep-pci", "ibm,plb-pci";
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primary;
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reg = <0x00000000 0xeec00000 0x00000008 /* Config space access */
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0x00000000 0xeed00000 0x00000004 /* IACK */
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0x00000000 0xeed00000 0x00000004 /* Special cycle */
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0x00000000 0xef400000 0x00000040>; /* Internal registers */
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/* Outbound ranges, one memory and one IO,
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* later cannot be changed. Chip supports a second
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* IO range but we don't use it for now
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*/
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ranges = <0x02000000 0x00000000 0xa0000000 0x00000000 0xa0000000 0x00000000 0x40000000
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0x02000000 0x00000000 0x00000000 0x00000000 0xe0000000 0x00000000 0x00100000
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0x01000000 0x00000000 0x00000000 0x00000000 0xe8000000 0x00000000 0x00010000>;
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/* Inbound 2GB range starting at 0 */
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dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x80000000>;
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/* Bamboo has all 4 IRQ pins tied together per slot */
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interrupt-map-mask = <0xf800 0x0 0x0 0x0>;
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interrupt-map = <
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/* IDSEL 1 */
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0x800 0x0 0x0 0x0 &UIC0 0x1c 0x8
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/* IDSEL 2 */
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0x1000 0x0 0x0 0x0 &UIC0 0x1b 0x8
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/* IDSEL 3 */
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0x1800 0x0 0x0 0x0 &UIC0 0x1a 0x8
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/* IDSEL 4 */
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0x2000 0x0 0x0 0x0 &UIC0 0x19 0x8
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>;
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};
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};
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chosen {
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linux,stdout-path = "/plb/opb/serial@ef600300";
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};
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};
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