diff options
| -rw-r--r-- | Documentation/powerpc/booting-without-of.txt | 38 | ||||
| -rw-r--r-- | arch/powerpc/boot/cuboot-pq2.c | 29 |
2 files changed, 46 insertions, 21 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt index a599f1a8a14..c36dcd2fbdc 100644 --- a/Documentation/powerpc/booting-without-of.txt +++ b/Documentation/powerpc/booting-without-of.txt @@ -2017,6 +2017,44 @@ platforms are moved over to use the flattened-device-tree model. fsl,cpm-command = <2e600000>; }; + m) Chipselect/Local Bus + + Properties: + - name : Should be localbus + - #address-cells : Should be either two or three. The first cell is the + chipselect number, and the remaining cells are the + offset into the chipselect. + - #size-cells : Either one or two, depending on how large each chipselect + can be. + - ranges : Each range corresponds to a single chipselect, and cover + the entire access window as configured. + + Example: + localbus@f0010100 { + compatible = "fsl,mpc8272ads-localbus", + "fsl,mpc8272-localbus", + "fsl,pq2-localbus"; + #address-cells = <2>; + #size-cells = <1>; + reg = <f0010100 40>; + + ranges = <0 0 fe000000 02000000 + 1 0 f4500000 00008000>; + + flash@0,0 { + compatible = "jedec-flash"; + reg = <0 0 2000000>; + bank-width = <4>; + device-width = <1>; + }; + + board-control@1,0 { + reg = <1 0 20>; + compatible = "fsl,mpc8272ads-bcsr"; + }; + }; + + More devices will be defined as this spec matures. VII - Specifying interrupt information for devices diff --git a/arch/powerpc/boot/cuboot-pq2.c b/arch/powerpc/boot/cuboot-pq2.c index 470ffacb837..61574f3272d 100644 --- a/arch/powerpc/boot/cuboot-pq2.c +++ b/arch/powerpc/boot/cuboot-pq2.c @@ -44,22 +44,21 @@ struct pci_range pci_ranges_buf[MAX_PROP_LEN / sizeof(struct pci_range)]; * some don't set up the PCI PIC at all, so we assume the device tree is * sane and update the BRx registers appropriately. * - * For any node defined as compatible with fsl,pq2-chipselect, - * #address/#size must be 2/1 for chipselect bus, 1/1 for parent bus, - * and ranges must be for whole chip selects. + * For any node defined as compatible with fsl,pq2-localbus, + * #address/#size must be 2/1 for the localbus, and 1/1 for the parent bus. + * Ranges must be for whole chip selects. */ static void update_cs_ranges(void) { - u32 ctrl_ph; - void *ctrl_node, *bus_node, *parent_node; + void *bus_node, *parent_node; u32 *ctrl_addr; unsigned long ctrl_size; u32 naddr, nsize; int len; int i; - bus_node = finddevice("/chipselect"); - if (!bus_node || !dt_is_compatible(bus_node, "fsl,pq2-chipselect")) + bus_node = finddevice("/localbus"); + if (!bus_node || !dt_is_compatible(bus_node, "fsl,pq2-localbus")) return; dt_get_reg_format(bus_node, &naddr, &nsize); @@ -74,19 +73,7 @@ static void update_cs_ranges(void) if (naddr != 1 || nsize != 1) goto err; - len = getprop(bus_node, "fsl,ctrl", &ctrl_ph, 4); - if (len != 4) - goto err; - - ctrl_node = find_node_by_prop_value(NULL, "linux,phandle", - (char *)&ctrl_ph, 4); - if (!ctrl_node) - goto err; - - if (!dt_is_compatible(ctrl_node, "fsl,pq2-chipselect-ctrl")) - goto err; - - if (!dt_xlate_reg(ctrl_node, 0, (unsigned long *)&ctrl_addr, + if (!dt_xlate_reg(bus_node, 0, (unsigned long *)&ctrl_addr, &ctrl_size)) goto err; @@ -123,7 +110,7 @@ static void update_cs_ranges(void) return; err: - printf("Bad /chipselect or fsl,pq2-chipselect-ctrl node\r\n"); + printf("Bad /localbus node\r\n"); } /* Older u-boots don't set PCI up properly. Update the hardware to match |