[POWERPC] powerpc: PA Semi PWRficient platform support
Base patch for PA6T and PA6T-1682M. This introduces the arch/powerpc/platform/pasemi directory, together with basic implementations for various setup. Much of this was based on other platform code, i.e. Maple, etc. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Olof Johansson
Paul Mackerras
Родитель
b3ebd1d862
Коммит
1e76875e51
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@ -413,6 +413,17 @@ config PPC_MAPLE
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This option enables support for the Maple 970FX Evaluation Board.
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For more informations, refer to <http://www.970eval.com>
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config PPC_PASEMI
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depends on PPC_MULTIPLATFORM && PPC64
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bool "PA Semi SoC-based platforms"
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default n
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select MPIC
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select PPC_UDBG_16550
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select GENERIC_TBSYNC
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help
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This option enables support for PA Semi's PWRficient line
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of SoC processors, including PA6T-1682M
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config PPC_CELL
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bool
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default n
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@ -13,5 +13,6 @@ obj-$(CONFIG_PPC_86xx) += 86xx/
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obj-$(CONFIG_PPC_PSERIES) += pseries/
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obj-$(CONFIG_PPC_ISERIES) += iseries/
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obj-$(CONFIG_PPC_MAPLE) += maple/
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obj-$(CONFIG_PPC_PASEMI) += pasemi/
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obj-$(CONFIG_PPC_CELL) += cell/
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obj-$(CONFIG_EMBEDDED6xx) += embedded6xx/
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@ -0,0 +1 @@
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obj-y += setup.o pci.o time.o
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@ -0,0 +1,8 @@
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#ifndef _PASEMI_PASEMI_H
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#define _PASEMI_PASEMI_H
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extern unsigned long pas_get_boot_time(void);
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extern void pas_pci_init(void);
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extern void pas_pcibios_fixup(void);
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#endif /* _PASEMI_PASEMI_H */
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@ -0,0 +1,198 @@
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/*
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* Copyright (C) 2006 PA Semi, Inc
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*
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* Authors: Kip Walker, PA Semi
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* Olof Johansson, PA Semi
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*
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* Maintained by: Olof Johansson <olof@lixom.net>
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*
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* Based on arch/powerpc/platforms/maple/pci.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <asm/pci-bridge.h>
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#include <asm/machdep.h>
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#include <asm/ppc-pci.h>
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#define PA_PXP_CFA(bus, devfn, off) (((bus) << 20) | ((devfn) << 12) | (off))
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#define CONFIG_OFFSET_VALID(off) ((off) < 4096)
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static unsigned long pa_pxp_cfg_addr(struct pci_controller *hose,
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u8 bus, u8 devfn, int offset)
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{
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return ((unsigned long)hose->cfg_data) + PA_PXP_CFA(bus, devfn, offset);
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}
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static int pa_pxp_read_config(struct pci_bus *bus, unsigned int devfn,
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int offset, int len, u32 *val)
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{
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struct pci_controller *hose;
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unsigned long addr;
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hose = pci_bus_to_host(bus);
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if (!hose)
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return PCIBIOS_DEVICE_NOT_FOUND;
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if (!CONFIG_OFFSET_VALID(offset))
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return PCIBIOS_BAD_REGISTER_NUMBER;
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addr = pa_pxp_cfg_addr(hose, bus->number, devfn, offset);
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/*
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* Note: the caller has already checked that offset is
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* suitably aligned and that len is 1, 2 or 4.
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*/
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switch (len) {
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case 1:
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*val = in_8((u8 *)addr);
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break;
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case 2:
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*val = in_le16((u16 *)addr);
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break;
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default:
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*val = in_le32((u32 *)addr);
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break;
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}
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return PCIBIOS_SUCCESSFUL;
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}
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static int pa_pxp_write_config(struct pci_bus *bus, unsigned int devfn,
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int offset, int len, u32 val)
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{
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struct pci_controller *hose;
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unsigned long addr;
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hose = pci_bus_to_host(bus);
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if (!hose)
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return PCIBIOS_DEVICE_NOT_FOUND;
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if (!CONFIG_OFFSET_VALID(offset))
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return PCIBIOS_BAD_REGISTER_NUMBER;
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addr = pa_pxp_cfg_addr(hose, bus->number, devfn, offset);
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/*
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* Note: the caller has already checked that offset is
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* suitably aligned and that len is 1, 2 or 4.
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*/
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switch (len) {
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case 1:
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out_8((u8 *)addr, val);
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(void) in_8((u8 *)addr);
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break;
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case 2:
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out_le16((u16 *)addr, val);
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(void) in_le16((u16 *)addr);
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break;
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default:
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out_le32((u32 *)addr, val);
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(void) in_le32((u32 *)addr);
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break;
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}
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return PCIBIOS_SUCCESSFUL;
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}
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static struct pci_ops pa_pxp_ops = {
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pa_pxp_read_config,
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pa_pxp_write_config,
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};
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static void __init setup_pa_pxp(struct pci_controller *hose)
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{
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hose->ops = &pa_pxp_ops;
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hose->cfg_data = ioremap(0xe0000000, 0x10000000);
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}
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static int __init add_bridge(struct device_node *dev)
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{
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struct pci_controller *hose;
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pr_debug("Adding PCI host bridge %s\n", dev->full_name);
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hose = pcibios_alloc_controller(dev);
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if (!hose)
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return -ENOMEM;
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hose->first_busno = 0;
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hose->last_busno = 0xff;
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setup_pa_pxp(hose);
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printk(KERN_INFO "Found PA-PXP PCI host bridge.\n");
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/* Interpret the "ranges" property */
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/* This also maps the I/O region and sets isa_io/mem_base */
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pci_process_bridge_OF_ranges(hose, dev, 1);
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pci_setup_phb_io(hose, 1);
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return 0;
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}
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void __init pas_pcibios_fixup(void)
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{
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struct pci_dev *dev = NULL;
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for_each_pci_dev(dev)
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pci_read_irq_line(dev);
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}
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static void __init pas_fixup_phb_resources(void)
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{
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struct pci_controller *hose, *tmp;
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list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
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unsigned long offset = (unsigned long)hose->io_base_virt - pci_io_base;
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hose->io_resource.start += offset;
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hose->io_resource.end += offset;
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printk(KERN_INFO "PCI Host %d, io start: %lx; io end: %lx\n",
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hose->global_number,
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hose->io_resource.start, hose->io_resource.end);
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}
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}
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void __init pas_pci_init(void)
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{
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struct device_node *np, *root;
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root = of_find_node_by_path("/");
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if (!root) {
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printk(KERN_CRIT "pas_pci_init: can't find root "
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"of device tree\n");
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return;
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}
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for (np = NULL; (np = of_get_next_child(root, np)) != NULL;)
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if (np->name && !strcmp(np->name, "pxp") && !add_bridge(np))
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of_node_get(np);
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of_node_put(root);
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pas_fixup_phb_resources();
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/* Setup the linkage between OF nodes and PHBs */
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pci_devs_phb_init();
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/* Use the common resource allocation mechanism */
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pci_probe_only = 1;
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}
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@ -0,0 +1,188 @@
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/*
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* Copyright (C) 2006 PA Semi, Inc
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*
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* Authors: Kip Walker, PA Semi
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* Olof Johansson, PA Semi
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*
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* Maintained by: Olof Johansson <olof@lixom.net>
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*
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* Based on arch/powerpc/platforms/maple/setup.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/config.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/console.h>
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#include <asm/prom.h>
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#include <asm/system.h>
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#include <asm/iommu.h>
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#include <asm/machdep.h>
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#include <asm/mpic.h>
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#include <asm/smp.h>
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#include <asm/time.h>
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#include "pasemi.h"
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static void pas_restart(char *cmd)
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{
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printk("restart unimplemented, looping...\n");
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for (;;) ;
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}
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static void pas_power_off(void)
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{
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printk("power off unimplemented, looping...\n");
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for (;;) ;
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}
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static void pas_halt(void)
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{
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pas_power_off();
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}
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#ifdef CONFIG_SMP
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struct smp_ops_t pas_smp_ops = {
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.probe = smp_mpic_probe,
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.message_pass = smp_mpic_message_pass,
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.kick_cpu = smp_generic_kick_cpu,
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.setup_cpu = smp_mpic_setup_cpu,
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.give_timebase = smp_generic_give_timebase,
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.take_timebase = smp_generic_take_timebase,
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};
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#endif /* CONFIG_SMP */
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void __init pas_setup_arch(void)
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{
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#ifdef CONFIG_SMP
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/* Setup SMP callback */
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smp_ops = &pas_smp_ops;
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#endif
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/* Lookup PCI hosts */
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pas_pci_init();
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#ifdef CONFIG_DUMMY_CONSOLE
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conswitchp = &dummy_con;
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#endif
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printk(KERN_DEBUG "Using default idle loop\n");
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}
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static void iommu_dev_setup_null(struct pci_dev *dev) { }
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static void iommu_bus_setup_null(struct pci_bus *bus) { }
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static void __init pas_init_early(void)
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{
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/* No iommu code yet */
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ppc_md.iommu_dev_setup = iommu_dev_setup_null;
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ppc_md.iommu_bus_setup = iommu_bus_setup_null;
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pci_direct_iommu_init();
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}
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/* No legacy IO on our parts */
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static int pas_check_legacy_ioport(unsigned int baseport)
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{
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return -ENODEV;
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}
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static __init void pas_init_IRQ(void)
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{
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struct device_node *np;
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struct device_node *root, *mpic_node;
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unsigned long openpic_addr;
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const unsigned int *opprop;
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int naddr, opplen;
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struct mpic *mpic;
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mpic_node = NULL;
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for_each_node_by_type(np, "interrupt-controller")
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if (device_is_compatible(np, "open-pic")) {
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mpic_node = np;
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break;
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}
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if (!mpic_node)
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for_each_node_by_type(np, "open-pic") {
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mpic_node = np;
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break;
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}
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if (!mpic_node) {
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printk(KERN_ERR
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"Failed to locate the MPIC interrupt controller\n");
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return;
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}
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/* Find address list in /platform-open-pic */
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root = of_find_node_by_path("/");
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naddr = prom_n_addr_cells(root);
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opprop = get_property(root, "platform-open-pic", &opplen);
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if (!opprop) {
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printk(KERN_ERR "No platform-open-pic property.\n");
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of_node_put(root);
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return;
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}
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openpic_addr = of_read_number(opprop, naddr);
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printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
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of_node_put(root);
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mpic = mpic_alloc(mpic_node, openpic_addr, MPIC_PRIMARY, 0, 0,
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" PAS-OPIC ");
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BUG_ON(!mpic);
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mpic_assign_isu(mpic, 0, openpic_addr + 0x10000);
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mpic_init(mpic);
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of_node_put(mpic_node);
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of_node_put(root);
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}
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static void __init pas_progress(char *s, unsigned short hex)
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{
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printk("[%04x] : %s\n", hex, s ? s : "");
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}
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|
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|
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/*
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* Called very early, MMU is off, device-tree isn't unflattened
|
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*/
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static int __init pas_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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if (!of_flat_dt_is_compatible(root, "PA6T-1682M"))
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return 0;
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hpte_init_native();
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return 1;
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}
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define_machine(pas) {
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.name = "PA Semi PA6T-1682M",
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.probe = pas_probe,
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.setup_arch = pas_setup_arch,
|
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.init_early = pas_init_early,
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.init_IRQ = pas_init_IRQ,
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.get_irq = mpic_get_irq,
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.pcibios_fixup = pas_pcibios_fixup,
|
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.restart = pas_restart,
|
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.power_off = pas_power_off,
|
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.halt = pas_halt,
|
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.get_boot_time = pas_get_boot_time,
|
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.calibrate_decr = generic_calibrate_decr,
|
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.check_legacy_ioport = pas_check_legacy_ioport,
|
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.progress = pas_progress,
|
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};
|
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|
|
@ -0,0 +1,29 @@
|
|||
/*
|
||||
* Copyright (C) 2006 PA Semi, Inc
|
||||
*
|
||||
* Maintained by: Olof Johansson <olof@lixom.net>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <linux/time.h>
|
||||
|
||||
#include <asm/time.h>
|
||||
|
||||
unsigned long __init pas_get_boot_time(void)
|
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{
|
||||
/* Let's just return a fake date right now */
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return mktime(2006, 1, 1, 12, 0, 0);
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||||
}
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||||
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