should:
a) add your platform support as a _boolean_ option in
- arch/powerpc/Kconfig, following the example of PPC_PSERIES,
- PPC_PMAC and PPC_MAPLE. The latter is probably a good
+ arch/powerpc/Kconfig, following the example of PPC_PSERIES
+ and PPC_PMAC. The latter is probably a good
example of a board support to start from.
b) create your main platform file as
help
Select this to enable early debugging via the RTAS console.
-config PPC_EARLY_DEBUG_MAPLE
- bool "Maple real mode"
- depends on PPC_MAPLE
- help
- Select this to enable early debugging for Maple.
-
config PPC_EARLY_DEBUG_PAS_REALMODE
bool "PA Semi real mode"
depends on PPC_PASEMI
zImage.epapr
zImage.holly
zImage.*lds
-zImage.maple
zImage.miboot
zImage.pmac
zImage.pseries
image-$(CONFIG_PPC_PSERIES) += zImage.pseries
image-$(CONFIG_PPC_POWERNV) += zImage.pseries
-image-$(CONFIG_PPC_MAPLE) += zImage.maple
image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
image-$(CONFIG_PPC_PS3) += dtbImage.ps3
image-$(CONFIG_PPC_CHRP) += zImage.chrp
clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \
zImage zImage.initrd zImage.chrp zImage.coff zImage.holly \
zImage.miboot zImage.pmac zImage.pseries \
- zImage.maple simpleImage.* otheros.bld
+ simpleImage.* otheros.bld
# clean up files cached by wrapper
clean-kernel-base := vmlinux.strip vmlinux.bin
fi
make_space=n
;;
-maple)
- platformo="$object/of.o $object/epapr.o"
- link_address='0x400000'
- make_space=n
- ;;
pmac|chrp)
platformo="$object/of.o $object/epapr.o"
make_space=n
# post-processing needed for some platforms
case "$platform" in
-pseries|chrp|maple)
+pseries|chrp)
$objbin/addnote "$ofile"
;;
coff)
+++ /dev/null
-CONFIG_PPC64=y
-CONFIG_SMP=y
-CONFIG_NR_CPUS=4
-CONFIG_SYSVIPC=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_NO_HZ=y
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_IKCONFIG=y
-CONFIG_IKCONFIG_PROC=y
-# CONFIG_COMPAT_BRK is not set
-CONFIG_PROFILING=y
-CONFIG_KPROBES=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-CONFIG_MODVERSIONS=y
-CONFIG_MODULE_SRCVERSION_ALL=y
-# CONFIG_BLK_DEV_BSG is not set
-CONFIG_PARTITION_ADVANCED=y
-CONFIG_MAC_PARTITION=y
-# CONFIG_PPC_POWERNV is not set
-# CONFIG_PPC_PSERIES is not set
-# CONFIG_PPC_PMAC is not set
-CONFIG_PPC_MAPLE=y
-CONFIG_UDBG_RTAS_CONSOLE=y
-CONFIG_GEN_RTC=y
-CONFIG_KEXEC=y
-CONFIG_IRQ_ALL_CPUS=y
-CONFIG_PPC_4K_PAGES=y
-CONFIG_PCI_MSI=y
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_XFRM_USER=m
-CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-CONFIG_IP_PNP=y
-CONFIG_IP_PNP_DHCP=y
-# CONFIG_IPV6 is not set
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_SIZE=8192
-# CONFIG_SCSI_PROC_FS is not set
-CONFIG_BLK_DEV_SD=y
-CONFIG_BLK_DEV_SR=y
-CONFIG_CHR_DEV_SG=y
-CONFIG_SCSI_IPR=y
-CONFIG_ATA=y
-CONFIG_PATA_AMD=y
-CONFIG_ATA_GENERIC=y
-CONFIG_NETDEVICES=y
-CONFIG_AMD8111_ETH=y
-CONFIG_TIGON3=y
-CONFIG_E1000=y
-CONFIG_USB_PEGASUS=y
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO is not set
-CONFIG_SERIAL_8250=y
-CONFIG_SERIAL_8250_CONSOLE=y
-CONFIG_HVC_RTAS=y
-# CONFIG_HW_RANDOM is not set
-CONFIG_I2C=y
-CONFIG_I2C_CHARDEV=y
-CONFIG_I2C_AMD8111=y
-# CONFIG_VGA_CONSOLE is not set
-CONFIG_HID_GYRATION=y
-CONFIG_HID_PANTHERLORD=y
-CONFIG_HID_PETALYNX=y
-CONFIG_HID_SAMSUNG=y
-CONFIG_HID_SUNPLUS=y
-CONFIG_USB=y
-CONFIG_USB_MON=y
-CONFIG_USB_EHCI_HCD=y
-CONFIG_USB_EHCI_ROOT_HUB_TT=y
-# CONFIG_USB_EHCI_HCD_PPC_OF is not set
-CONFIG_USB_OHCI_HCD=y
-CONFIG_USB_UHCI_HCD=y
-CONFIG_USB_SERIAL=y
-CONFIG_USB_SERIAL_GENERIC=y
-CONFIG_USB_SERIAL_CYPRESS_M8=m
-CONFIG_USB_SERIAL_GARMIN=m
-CONFIG_USB_SERIAL_IPW=m
-CONFIG_USB_SERIAL_KEYSPAN=y
-CONFIG_USB_SERIAL_TI=m
-CONFIG_EXT2_FS=y
-CONFIG_EXT4_FS=y
-CONFIG_FS_DAX=y
-CONFIG_MSDOS_FS=y
-CONFIG_VFAT_FS=y
-CONFIG_PROC_KCORE=y
-CONFIG_TMPFS=y
-CONFIG_HUGETLBFS=y
-CONFIG_CRAMFS=y
-CONFIG_NFS_FS=y
-CONFIG_NFS_V3_ACL=y
-CONFIG_NFS_V4=y
-CONFIG_ROOT_NFS=y
-CONFIG_NLS_DEFAULT="utf-8"
-CONFIG_NLS_UTF8=y
-CONFIG_CRC_CCITT=y
-CONFIG_CRC_T10DIF=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
-CONFIG_DEBUG_STACK_USAGE=y
-CONFIG_DEBUG_STACKOVERFLOW=y
-CONFIG_XMON=y
-CONFIG_XMON_DEFAULT=y
-CONFIG_BOOTX_TEXT=y
-CONFIG_CRYPTO_ECB=m
-CONFIG_CRYPTO_PCBC=m
-# CONFIG_CRYPTO_HW is not set
-CONFIG_PRINTK_TIME=y
CONFIG_IBMEBUS=y
CONFIG_PAPR_SCM=m
CONFIG_PPC_SVM=y
-CONFIG_PPC_MAPLE=y
CONFIG_PPC_PASEMI=y
CONFIG_PPC_PASEMI_IOMMU=y
CONFIG_PPC_PS3=y
void __init udbg_init_debug_lpar(void);
void __init udbg_init_debug_lpar_hvsi(void);
void __init udbg_init_pmac_realmode(void);
-void __init udbg_init_maple_realmode(void);
void __init udbg_init_pas_realmode(void);
void __init udbg_init_rtas_panel(void);
void __init udbg_init_rtas_console(void);
blr
#endif /* CONFIG_PPC_EARLY_DEBUG_BOOTX */
-#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE)
+#ifdef CONFIG_PPC_PMAC
/*
* Do an IO access in real mode
sync
isync
blr
-#endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */
+#endif // CONFIG_PPC_PMAC
#ifdef CONFIG_PPC_PASEMI
#endif /* CONFIG_PPC_PASEMI */
-#if defined(CONFIG_CPU_FREQ_PMAC64) || defined(CONFIG_CPU_FREQ_MAPLE)
+#ifdef CONFIG_CPU_FREQ_PMAC64
/*
* SCOM access functions for 970 (FX only for now)
*
/* restore interrupts */
mtmsrd r5,1
blr
-#endif /* CONFIG_CPU_FREQ_PMAC64 || CONFIG_CPU_FREQ_MAPLE */
+#endif // CONFIG_CPU_FREQ_PMAC64
/* kexec_wait(phys_cpu)
*
dt_struct_start, dt_struct_end);
}
-#ifdef CONFIG_PPC_MAPLE
-/* PIBS Version 1.05.0000 04/26/2005 has an incorrect /ht/isa/ranges property.
- * The values are bad, and it doesn't even have the right number of cells. */
-static void __init fixup_device_tree_maple(void)
-{
- phandle isa;
- u32 rloc = 0x01002000; /* IO space; PCI device = 4 */
- u32 isa_ranges[6];
- char *name;
-
- name = "/ht@0/isa@4";
- isa = call_prom("finddevice", 1, 1, ADDR(name));
- if (!PHANDLE_VALID(isa)) {
- name = "/ht@0/isa@6";
- isa = call_prom("finddevice", 1, 1, ADDR(name));
- rloc = 0x01003000; /* IO space; PCI device = 6 */
- }
- if (!PHANDLE_VALID(isa))
- return;
-
- if (prom_getproplen(isa, "ranges") != 12)
- return;
- if (prom_getprop(isa, "ranges", isa_ranges, sizeof(isa_ranges))
- == PROM_ERROR)
- return;
-
- if (isa_ranges[0] != 0x1 ||
- isa_ranges[1] != 0xf4000000 ||
- isa_ranges[2] != 0x00010000)
- return;
-
- prom_printf("Fixing up bogus ISA range on Maple/Apache...\n");
-
- isa_ranges[0] = 0x1;
- isa_ranges[1] = 0x0;
- isa_ranges[2] = rloc;
- isa_ranges[3] = 0x0;
- isa_ranges[4] = 0x0;
- isa_ranges[5] = 0x00010000;
- prom_setprop(isa, name, "ranges",
- isa_ranges, sizeof(isa_ranges));
-}
-
-#define CPC925_MC_START 0xf8000000
-#define CPC925_MC_LENGTH 0x1000000
-/* The values for memory-controller don't have right number of cells */
-static void __init fixup_device_tree_maple_memory_controller(void)
-{
- phandle mc;
- u32 mc_reg[4];
- char *name = "/hostbridge@f8000000";
- u32 ac, sc;
-
- mc = call_prom("finddevice", 1, 1, ADDR(name));
- if (!PHANDLE_VALID(mc))
- return;
-
- if (prom_getproplen(mc, "reg") != 8)
- return;
-
- prom_getprop(prom.root, "#address-cells", &ac, sizeof(ac));
- prom_getprop(prom.root, "#size-cells", &sc, sizeof(sc));
- if ((ac != 2) || (sc != 2))
- return;
-
- if (prom_getprop(mc, "reg", mc_reg, sizeof(mc_reg)) == PROM_ERROR)
- return;
-
- if (mc_reg[0] != CPC925_MC_START || mc_reg[1] != CPC925_MC_LENGTH)
- return;
-
- prom_printf("Fixing up bogus hostbridge on Maple...\n");
-
- mc_reg[0] = 0x0;
- mc_reg[1] = CPC925_MC_START;
- mc_reg[2] = 0x0;
- mc_reg[3] = CPC925_MC_LENGTH;
- prom_setprop(mc, name, "reg", mc_reg, sizeof(mc_reg));
-}
-#else
-#define fixup_device_tree_maple()
-#define fixup_device_tree_maple_memory_controller()
-#endif
-
#ifdef CONFIG_PPC_CHRP
/*
* Pegasos and BriQ lacks the "ranges" property in the isa node
static void __init fixup_device_tree(void)
{
- fixup_device_tree_maple();
- fixup_device_tree_maple_memory_controller();
fixup_device_tree_chrp();
fixup_device_tree_pmac();
fixup_device_tree_efika();
#elif defined(CONFIG_PPC_EARLY_DEBUG_RTAS_CONSOLE)
/* RTAS console debug */
udbg_init_rtas_console();
-#elif defined(CONFIG_PPC_EARLY_DEBUG_MAPLE)
- /* Maple real mode debug */
- udbg_init_maple_realmode();
#elif defined(CONFIG_PPC_EARLY_DEBUG_PAS_REALMODE)
udbg_init_pas_realmode();
#elif defined(CONFIG_PPC_EARLY_DEBUG_BOOTX)
udbg_use_uart();
}
-#ifdef CONFIG_PPC_MAPLE
-
-#define UDBG_UART_MAPLE_ADDR ((void __iomem *)0xf40003f8)
-
-static u8 udbg_uart_in_maple(unsigned int reg)
-{
- return real_readb(UDBG_UART_MAPLE_ADDR + reg);
-}
-
-static void udbg_uart_out_maple(unsigned int reg, u8 val)
-{
- real_writeb(val, UDBG_UART_MAPLE_ADDR + reg);
-}
-
-void __init udbg_init_maple_realmode(void)
-{
- udbg_uart_in = udbg_uart_in_maple;
- udbg_uart_out = udbg_uart_out_maple;
- udbg_use_uart();
-}
-
-#endif /* CONFIG_PPC_MAPLE */
-
#ifdef CONFIG_PPC_PASEMI
#define UDBG_UART_PAS_ADDR ((void __iomem *)0xfcff03f8UL)
source "arch/powerpc/platforms/512x/Kconfig"
source "arch/powerpc/platforms/52xx/Kconfig"
source "arch/powerpc/platforms/powermac/Kconfig"
-source "arch/powerpc/platforms/maple/Kconfig"
source "arch/powerpc/platforms/pasemi/Kconfig"
source "arch/powerpc/platforms/ps3/Kconfig"
source "arch/powerpc/platforms/cell/Kconfig"
obj-$(CONFIG_PPC_86xx) += 86xx/
obj-$(CONFIG_PPC_POWERNV) += powernv/
obj-$(CONFIG_PPC_PSERIES) += pseries/
-obj-$(CONFIG_PPC_MAPLE) += maple/
obj-$(CONFIG_PPC_PASEMI) += pasemi/
obj-$(CONFIG_PPC_CELL) += cell/
obj-$(CONFIG_PPC_PS3) += ps3/
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-config PPC_MAPLE
- depends on PPC64 && PPC_BOOK3S && CPU_BIG_ENDIAN
- bool "Maple 970FX Evaluation Board"
- select FORCE_PCI
- select MPIC
- select U3_DART
- select MPIC_U3_HT_IRQS
- select GENERIC_TBSYNC
- select PPC_UDBG_16550
- select PPC_970_NAP
- select PPC_64S_HASH_MMU
- select PPC_HASH_MMU_NATIVE
- select PPC_RTAS
- select MMIO_NVRAM
- select ATA_NONSTANDARD if ATA
- help
- This option enables support for the Maple 970FX Evaluation Board.
- For more information, refer to <http://www.970eval.com>
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y += setup.o pci.o time.o
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Declarations for maple-specific code.
- *
- * Maple is the name of a PPC970 evaluation board.
- */
-extern int maple_set_rtc_time(struct rtc_time *tm);
-extern void maple_get_rtc_time(struct rtc_time *tm);
-extern time64_t maple_get_boot_time(void);
-extern void maple_pci_init(void);
-extern void maple_pci_irq_fixup(struct pci_dev *dev);
-extern int maple_pci_get_legacy_ide_irq(struct pci_dev *dev, int channel);
-
-extern struct pci_controller_ops maple_pci_controller_ops;
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2004 Benjamin Herrenschmuidt (benh@kernel.crashing.org),
- * IBM Corp.
- */
-
-#undef DEBUG
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/of_irq.h>
-
-#include <asm/sections.h>
-#include <asm/io.h>
-#include <asm/pci-bridge.h>
-#include <asm/machdep.h>
-#include <asm/iommu.h>
-#include <asm/ppc-pci.h>
-#include <asm/isa-bridge.h>
-
-#include "maple.h"
-
-#ifdef DEBUG
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
-static struct pci_controller *u3_agp, *u3_ht, *u4_pcie;
-
-static int __init fixup_one_level_bus_range(struct device_node *node, int higher)
-{
- for (; node; node = node->sibling) {
- const int *bus_range;
- const unsigned int *class_code;
- int len;
-
- /* For PCI<->PCI bridges or CardBus bridges, we go down */
- class_code = of_get_property(node, "class-code", NULL);
- if (!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
- (*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS))
- continue;
- bus_range = of_get_property(node, "bus-range", &len);
- if (bus_range != NULL && len > 2 * sizeof(int)) {
- if (bus_range[1] > higher)
- higher = bus_range[1];
- }
- higher = fixup_one_level_bus_range(node->child, higher);
- }
- return higher;
-}
-
-/* This routine fixes the "bus-range" property of all bridges in the
- * system since they tend to have their "last" member wrong on macs
- *
- * Note that the bus numbers manipulated here are OF bus numbers, they
- * are not Linux bus numbers.
- */
-static void __init fixup_bus_range(struct device_node *bridge)
-{
- int *bus_range;
- struct property *prop;
- int len;
-
- /* Lookup the "bus-range" property for the hose */
- prop = of_find_property(bridge, "bus-range", &len);
- if (prop == NULL || prop->value == NULL || len < 2 * sizeof(int)) {
- printk(KERN_WARNING "Can't get bus-range for %pOF\n",
- bridge);
- return;
- }
- bus_range = prop->value;
- bus_range[1] = fixup_one_level_bus_range(bridge->child, bus_range[1]);
-}
-
-
-static unsigned long u3_agp_cfa0(u8 devfn, u8 off)
-{
- return (1 << (unsigned long)PCI_SLOT(devfn)) |
- ((unsigned long)PCI_FUNC(devfn) << 8) |
- ((unsigned long)off & 0xFCUL);
-}
-
-static unsigned long u3_agp_cfa1(u8 bus, u8 devfn, u8 off)
-{
- return ((unsigned long)bus << 16) |
- ((unsigned long)devfn << 8) |
- ((unsigned long)off & 0xFCUL) |
- 1UL;
-}
-
-static volatile void __iomem *u3_agp_cfg_access(struct pci_controller* hose,
- u8 bus, u8 dev_fn, u8 offset)
-{
- unsigned int caddr;
-
- if (bus == hose->first_busno) {
- if (dev_fn < (11 << 3))
- return NULL;
- caddr = u3_agp_cfa0(dev_fn, offset);
- } else
- caddr = u3_agp_cfa1(bus, dev_fn, offset);
-
- /* Uninorth will return garbage if we don't read back the value ! */
- do {
- out_le32(hose->cfg_addr, caddr);
- } while (in_le32(hose->cfg_addr) != caddr);
-
- offset &= 0x07;
- return hose->cfg_data + offset;
-}
-
-static int u3_agp_read_config(struct pci_bus *bus, unsigned int devfn,
- int offset, int len, u32 *val)
-{
- struct pci_controller *hose;
- volatile void __iomem *addr;
-
- hose = pci_bus_to_host(bus);
- if (hose == NULL)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- addr = u3_agp_cfg_access(hose, bus->number, devfn, offset);
- if (!addr)
- return PCIBIOS_DEVICE_NOT_FOUND;
- /*
- * Note: the caller has already checked that offset is
- * suitably aligned and that len is 1, 2 or 4.
- */
- switch (len) {
- case 1:
- *val = in_8(addr);
- break;
- case 2:
- *val = in_le16(addr);
- break;
- default:
- *val = in_le32(addr);
- break;
- }
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int u3_agp_write_config(struct pci_bus *bus, unsigned int devfn,
- int offset, int len, u32 val)
-{
- struct pci_controller *hose;
- volatile void __iomem *addr;
-
- hose = pci_bus_to_host(bus);
- if (hose == NULL)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- addr = u3_agp_cfg_access(hose, bus->number, devfn, offset);
- if (!addr)
- return PCIBIOS_DEVICE_NOT_FOUND;
- /*
- * Note: the caller has already checked that offset is
- * suitably aligned and that len is 1, 2 or 4.
- */
- switch (len) {
- case 1:
- out_8(addr, val);
- break;
- case 2:
- out_le16(addr, val);
- break;
- default:
- out_le32(addr, val);
- break;
- }
- return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops u3_agp_pci_ops =
-{
- .read = u3_agp_read_config,
- .write = u3_agp_write_config,
-};
-
-static unsigned long u3_ht_cfa0(u8 devfn, u8 off)
-{
- return (devfn << 8) | off;
-}
-
-static unsigned long u3_ht_cfa1(u8 bus, u8 devfn, u8 off)
-{
- return u3_ht_cfa0(devfn, off) + (bus << 16) + 0x01000000UL;
-}
-
-static volatile void __iomem *u3_ht_cfg_access(struct pci_controller* hose,
- u8 bus, u8 devfn, u8 offset)
-{
- if (bus == hose->first_busno) {
- if (PCI_SLOT(devfn) == 0)
- return NULL;
- return hose->cfg_data + u3_ht_cfa0(devfn, offset);
- } else
- return hose->cfg_data + u3_ht_cfa1(bus, devfn, offset);
-}
-
-static int u3_ht_root_read_config(struct pci_controller *hose, u8 offset,
- int len, u32 *val)
-{
- volatile void __iomem *addr;
-
- addr = hose->cfg_addr;
- addr += ((offset & ~3) << 2) + (4 - len - (offset & 3));
-
- switch (len) {
- case 1:
- *val = in_8(addr);
- break;
- case 2:
- *val = in_be16(addr);
- break;
- default:
- *val = in_be32(addr);
- break;
- }
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int u3_ht_root_write_config(struct pci_controller *hose, u8 offset,
- int len, u32 val)
-{
- volatile void __iomem *addr;
-
- addr = hose->cfg_addr + ((offset & ~3) << 2) + (4 - len - (offset & 3));
-
- if (offset >= PCI_BASE_ADDRESS_0 && offset < PCI_CAPABILITY_LIST)
- return PCIBIOS_SUCCESSFUL;
-
- switch (len) {
- case 1:
- out_8(addr, val);
- break;
- case 2:
- out_be16(addr, val);
- break;
- default:
- out_be32(addr, val);
- break;
- }
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int u3_ht_read_config(struct pci_bus *bus, unsigned int devfn,
- int offset, int len, u32 *val)
-{
- struct pci_controller *hose;
- volatile void __iomem *addr;
-
- hose = pci_bus_to_host(bus);
- if (hose == NULL)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- if (bus->number == hose->first_busno && devfn == PCI_DEVFN(0, 0))
- return u3_ht_root_read_config(hose, offset, len, val);
-
- if (offset > 0xff)
- return PCIBIOS_BAD_REGISTER_NUMBER;
-
- addr = u3_ht_cfg_access(hose, bus->number, devfn, offset);
- if (!addr)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- /*
- * Note: the caller has already checked that offset is
- * suitably aligned and that len is 1, 2 or 4.
- */
- switch (len) {
- case 1:
- *val = in_8(addr);
- break;
- case 2:
- *val = in_le16(addr);
- break;
- default:
- *val = in_le32(addr);
- break;
- }
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int u3_ht_write_config(struct pci_bus *bus, unsigned int devfn,
- int offset, int len, u32 val)
-{
- struct pci_controller *hose;
- volatile void __iomem *addr;
-
- hose = pci_bus_to_host(bus);
- if (hose == NULL)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- if (bus->number == hose->first_busno && devfn == PCI_DEVFN(0, 0))
- return u3_ht_root_write_config(hose, offset, len, val);
-
- if (offset > 0xff)
- return PCIBIOS_BAD_REGISTER_NUMBER;
-
- addr = u3_ht_cfg_access(hose, bus->number, devfn, offset);
- if (!addr)
- return PCIBIOS_DEVICE_NOT_FOUND;
- /*
- * Note: the caller has already checked that offset is
- * suitably aligned and that len is 1, 2 or 4.
- */
- switch (len) {
- case 1:
- out_8(addr, val);
- break;
- case 2:
- out_le16(addr, val);
- break;
- default:
- out_le32(addr, val);
- break;
- }
- return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops u3_ht_pci_ops =
-{
- .read = u3_ht_read_config,
- .write = u3_ht_write_config,
-};
-
-static unsigned int u4_pcie_cfa0(unsigned int devfn, unsigned int off)
-{
- return (1 << PCI_SLOT(devfn)) |
- (PCI_FUNC(devfn) << 8) |
- ((off >> 8) << 28) |
- (off & 0xfcu);
-}
-
-static unsigned int u4_pcie_cfa1(unsigned int bus, unsigned int devfn,
- unsigned int off)
-{
- return (bus << 16) |
- (devfn << 8) |
- ((off >> 8) << 28) |
- (off & 0xfcu) | 1u;
-}
-
-static volatile void __iomem *u4_pcie_cfg_access(struct pci_controller* hose,
- u8 bus, u8 dev_fn, int offset)
-{
- unsigned int caddr;
-
- if (bus == hose->first_busno)
- caddr = u4_pcie_cfa0(dev_fn, offset);
- else
- caddr = u4_pcie_cfa1(bus, dev_fn, offset);
-
- /* Uninorth will return garbage if we don't read back the value ! */
- do {
- out_le32(hose->cfg_addr, caddr);
- } while (in_le32(hose->cfg_addr) != caddr);
-
- offset &= 0x03;
- return hose->cfg_data + offset;
-}
-
-static int u4_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
- int offset, int len, u32 *val)
-{
- struct pci_controller *hose;
- volatile void __iomem *addr;
-
- hose = pci_bus_to_host(bus);
- if (hose == NULL)
- return PCIBIOS_DEVICE_NOT_FOUND;
- if (offset >= 0x1000)
- return PCIBIOS_BAD_REGISTER_NUMBER;
- addr = u4_pcie_cfg_access(hose, bus->number, devfn, offset);
- if (!addr)
- return PCIBIOS_DEVICE_NOT_FOUND;
- /*
- * Note: the caller has already checked that offset is
- * suitably aligned and that len is 1, 2 or 4.
- */
- switch (len) {
- case 1:
- *val = in_8(addr);
- break;
- case 2:
- *val = in_le16(addr);
- break;
- default:
- *val = in_le32(addr);
- break;
- }
- return PCIBIOS_SUCCESSFUL;
-}
-static int u4_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
- int offset, int len, u32 val)
-{
- struct pci_controller *hose;
- volatile void __iomem *addr;
-
- hose = pci_bus_to_host(bus);
- if (hose == NULL)
- return PCIBIOS_DEVICE_NOT_FOUND;
- if (offset >= 0x1000)
- return PCIBIOS_BAD_REGISTER_NUMBER;
- addr = u4_pcie_cfg_access(hose, bus->number, devfn, offset);
- if (!addr)
- return PCIBIOS_DEVICE_NOT_FOUND;
- /*
- * Note: the caller has already checked that offset is
- * suitably aligned and that len is 1, 2 or 4.
- */
- switch (len) {
- case 1:
- out_8(addr, val);
- break;
- case 2:
- out_le16(addr, val);
- break;
- default:
- out_le32(addr, val);
- break;
- }
- return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops u4_pcie_pci_ops =
-{
- .read = u4_pcie_read_config,
- .write = u4_pcie_write_config,
-};
-
-static void __init setup_u3_agp(struct pci_controller* hose)
-{
- /* On G5, we move AGP up to high bus number so we don't need
- * to reassign bus numbers for HT. If we ever have P2P bridges
- * on AGP, we'll have to move pci_assign_all_buses to the
- * pci_controller structure so we enable it for AGP and not for
- * HT childs.
- * We hard code the address because of the different size of
- * the reg address cell, we shall fix that by killing struct
- * reg_property and using some accessor functions instead
- */
- hose->first_busno = 0xf0;
- hose->last_busno = 0xff;
- hose->ops = &u3_agp_pci_ops;
- hose->cfg_addr = ioremap(0xf0000000 + 0x800000, 0x1000);
- hose->cfg_data = ioremap(0xf0000000 + 0xc00000, 0x1000);
-
- u3_agp = hose;
-}
-
-static void __init setup_u4_pcie(struct pci_controller* hose)
-{
- /* We currently only implement the "non-atomic" config space, to
- * be optimised later.
- */
- hose->ops = &u4_pcie_pci_ops;
- hose->cfg_addr = ioremap(0xf0000000 + 0x800000, 0x1000);
- hose->cfg_data = ioremap(0xf0000000 + 0xc00000, 0x1000);
-
- u4_pcie = hose;
-}
-
-static void __init setup_u3_ht(struct pci_controller* hose)
-{
- hose->ops = &u3_ht_pci_ops;
-
- /* We hard code the address because of the different size of
- * the reg address cell, we shall fix that by killing struct
- * reg_property and using some accessor functions instead
- */
- hose->cfg_data = ioremap(0xf2000000, 0x02000000);
- hose->cfg_addr = ioremap(0xf8070000, 0x1000);
-
- hose->first_busno = 0;
- hose->last_busno = 0xef;
-
- u3_ht = hose;
-}
-
-static int __init maple_add_bridge(struct device_node *dev)
-{
- int len;
- struct pci_controller *hose;
- char* disp_name;
- const int *bus_range;
- int primary = 1;
-
- DBG("Adding PCI host bridge %pOF\n", dev);
-
- bus_range = of_get_property(dev, "bus-range", &len);
- if (bus_range == NULL || len < 2 * sizeof(int)) {
- printk(KERN_WARNING "Can't get bus-range for %pOF, assume bus 0\n",
- dev);
- }
-
- hose = pcibios_alloc_controller(dev);
- if (hose == NULL)
- return -ENOMEM;
- hose->first_busno = bus_range ? bus_range[0] : 0;
- hose->last_busno = bus_range ? bus_range[1] : 0xff;
- hose->controller_ops = maple_pci_controller_ops;
-
- disp_name = NULL;
- if (of_device_is_compatible(dev, "u3-agp")) {
- setup_u3_agp(hose);
- disp_name = "U3-AGP";
- primary = 0;
- } else if (of_device_is_compatible(dev, "u3-ht")) {
- setup_u3_ht(hose);
- disp_name = "U3-HT";
- primary = 1;
- } else if (of_device_is_compatible(dev, "u4-pcie")) {
- setup_u4_pcie(hose);
- disp_name = "U4-PCIE";
- primary = 0;
- }
- printk(KERN_INFO "Found %s PCI host bridge. Firmware bus number: %d->%d\n",
- disp_name, hose->first_busno, hose->last_busno);
-
- /* Interpret the "ranges" property */
- /* This also maps the I/O region and sets isa_io/mem_base */
- pci_process_bridge_OF_ranges(hose, dev, primary);
-
- /* Fixup "bus-range" OF property */
- fixup_bus_range(dev);
-
- /* Check for legacy IOs */
- isa_bridge_find_early(hose);
-
- /* create pci_dn's for DT nodes under this PHB */
- pci_devs_phb_init_dynamic(hose);
-
- return 0;
-}
-
-
-void maple_pci_irq_fixup(struct pci_dev *dev)
-{
- DBG(" -> maple_pci_irq_fixup\n");
-
- /* Fixup IRQ for PCIe host */
- if (u4_pcie != NULL && dev->bus->number == 0 &&
- pci_bus_to_host(dev->bus) == u4_pcie) {
- printk(KERN_DEBUG "Fixup U4 PCIe IRQ\n");
- dev->irq = irq_create_mapping(NULL, 1);
- if (dev->irq)
- irq_set_irq_type(dev->irq, IRQ_TYPE_LEVEL_LOW);
- }
-
- /* Hide AMD8111 IDE interrupt when in legacy mode so
- * the driver calls pci_get_legacy_ide_irq()
- */
- if (dev->vendor == PCI_VENDOR_ID_AMD &&
- dev->device == PCI_DEVICE_ID_AMD_8111_IDE &&
- (dev->class & 5) != 5) {
- dev->irq = 0;
- }
-
- DBG(" <- maple_pci_irq_fixup\n");
-}
-
-static int maple_pci_root_bridge_prepare(struct pci_host_bridge *bridge)
-{
- struct pci_controller *hose = pci_bus_to_host(bridge->bus);
- struct device_node *np, *child;
-
- if (hose != u3_agp)
- return 0;
-
- /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We
- * assume there is no P2P bridge on the AGP bus, which should be a
- * safe assumptions hopefully.
- */
- np = hose->dn;
- PCI_DN(np)->busno = 0xf0;
- for_each_child_of_node(np, child)
- PCI_DN(child)->busno = 0xf0;
-
- return 0;
-}
-
-void __init maple_pci_init(void)
-{
- struct device_node *np, *root;
- struct device_node *ht = NULL;
-
- /* Probe root PCI hosts, that is on U3 the AGP host and the
- * HyperTransport host. That one is actually "kept" around
- * and actually added last as its resource management relies
- * on the AGP resources to have been setup first
- */
- root = of_find_node_by_path("/");
- if (root == NULL) {
- printk(KERN_CRIT "maple_find_bridges: can't find root of device tree\n");
- return;
- }
- for_each_child_of_node(root, np) {
- if (!of_node_is_type(np, "pci") && !of_node_is_type(np, "ht"))
- continue;
- if ((of_device_is_compatible(np, "u4-pcie") ||
- of_device_is_compatible(np, "u3-agp")) &&
- maple_add_bridge(np) == 0)
- of_node_get(np);
-
- if (of_device_is_compatible(np, "u3-ht")) {
- of_node_get(np);
- ht = np;
- }
- }
- of_node_put(root);
-
- /* Now setup the HyperTransport host if we found any
- */
- if (ht && maple_add_bridge(ht) != 0)
- of_node_put(ht);
-
- ppc_md.pcibios_root_bridge_prepare = maple_pci_root_bridge_prepare;
-
- /* Tell pci.c to not change any resource allocations. */
- pci_add_flags(PCI_PROBE_ONLY);
-}
-
-int maple_pci_get_legacy_ide_irq(struct pci_dev *pdev, int channel)
-{
- struct device_node *np;
- unsigned int defirq = channel ? 15 : 14;
- unsigned int irq;
-
- if (pdev->vendor != PCI_VENDOR_ID_AMD ||
- pdev->device != PCI_DEVICE_ID_AMD_8111_IDE)
- return defirq;
-
- np = pci_device_to_OF_node(pdev);
- if (np == NULL) {
- printk("Failed to locate OF node for IDE %s\n",
- pci_name(pdev));
- return defirq;
- }
- irq = irq_of_parse_and_map(np, channel & 0x1);
- if (!irq) {
- printk("Failed to map onboard IDE interrupt for channel %d\n",
- channel);
- return defirq;
- }
- return irq;
-}
-
-static void quirk_ipr_msi(struct pci_dev *dev)
-{
- /* Something prevents MSIs from the IPR from working on Bimini,
- * and the driver has no smarts to recover. So disable MSI
- * on it for now. */
-
- if (machine_is(maple)) {
- dev->no_msi = 1;
- dev_info(&dev->dev, "Quirk disabled MSI\n");
- }
-}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
- quirk_ipr_msi);
-
-struct pci_controller_ops maple_pci_controller_ops = {
-};
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Maple (970 eval board) setup code
- *
- * (c) Copyright 2004 Benjamin Herrenschmidt (benh@kernel.crashing.org),
- * IBM Corp.
- */
-
-#undef DEBUG
-
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/export.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/tty.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/major.h>
-#include <linux/initrd.h>
-#include <linux/vt_kern.h>
-#include <linux/console.h>
-#include <linux/pci.h>
-#include <linux/adb.h>
-#include <linux/cuda.h>
-#include <linux/pmu.h>
-#include <linux/irq.h>
-#include <linux/seq_file.h>
-#include <linux/root_dev.h>
-#include <linux/serial.h>
-#include <linux/smp.h>
-#include <linux/bitops.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/platform_device.h>
-#include <linux/memblock.h>
-
-#include <asm/processor.h>
-#include <asm/sections.h>
-#include <asm/io.h>
-#include <asm/pci-bridge.h>
-#include <asm/iommu.h>
-#include <asm/machdep.h>
-#include <asm/dma.h>
-#include <asm/cputable.h>
-#include <asm/time.h>
-#include <asm/mpic.h>
-#include <asm/rtas.h>
-#include <asm/udbg.h>
-#include <asm/nvram.h>
-
-#include "maple.h"
-
-#ifdef DEBUG
-#define DBG(fmt...) udbg_printf(fmt)
-#else
-#define DBG(fmt...)
-#endif
-
-static unsigned long maple_find_nvram_base(void)
-{
- struct device_node *rtcs;
- unsigned long result = 0;
-
- /* find NVRAM device */
- rtcs = of_find_compatible_node(NULL, "nvram", "AMD8111");
- if (rtcs) {
- struct resource r;
- if (of_address_to_resource(rtcs, 0, &r)) {
- printk(KERN_EMERG "Maple: Unable to translate NVRAM"
- " address\n");
- goto bail;
- }
- if (!(r.flags & IORESOURCE_IO)) {
- printk(KERN_EMERG "Maple: NVRAM address isn't PIO!\n");
- goto bail;
- }
- result = r.start;
- } else
- printk(KERN_EMERG "Maple: Unable to find NVRAM\n");
- bail:
- of_node_put(rtcs);
- return result;
-}
-
-static void __noreturn maple_restart(char *cmd)
-{
- unsigned int maple_nvram_base;
- const unsigned int *maple_nvram_offset, *maple_nvram_command;
- struct device_node *sp;
-
- maple_nvram_base = maple_find_nvram_base();
- if (maple_nvram_base == 0)
- goto fail;
-
- /* find service processor device */
- sp = of_find_node_by_name(NULL, "service-processor");
- if (!sp) {
- printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
- goto fail;
- }
- maple_nvram_offset = of_get_property(sp, "restart-addr", NULL);
- maple_nvram_command = of_get_property(sp, "restart-value", NULL);
- of_node_put(sp);
-
- /* send command */
- outb_p(*maple_nvram_command, maple_nvram_base + *maple_nvram_offset);
- for (;;) ;
- fail:
- printk(KERN_EMERG "Maple: Manual Restart Required\n");
- for (;;) ;
-}
-
-static void __noreturn maple_power_off(void)
-{
- unsigned int maple_nvram_base;
- const unsigned int *maple_nvram_offset, *maple_nvram_command;
- struct device_node *sp;
-
- maple_nvram_base = maple_find_nvram_base();
- if (maple_nvram_base == 0)
- goto fail;
-
- /* find service processor device */
- sp = of_find_node_by_name(NULL, "service-processor");
- if (!sp) {
- printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
- goto fail;
- }
- maple_nvram_offset = of_get_property(sp, "power-off-addr", NULL);
- maple_nvram_command = of_get_property(sp, "power-off-value", NULL);
- of_node_put(sp);
-
- /* send command */
- outb_p(*maple_nvram_command, maple_nvram_base + *maple_nvram_offset);
- for (;;) ;
- fail:
- printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
- for (;;) ;
-}
-
-static void __noreturn maple_halt(void)
-{
- maple_power_off();
-}
-
-#ifdef CONFIG_SMP
-static struct smp_ops_t maple_smp_ops = {
- .probe = smp_mpic_probe,
- .message_pass = smp_mpic_message_pass,
- .kick_cpu = smp_generic_kick_cpu,
- .setup_cpu = smp_mpic_setup_cpu,
- .give_timebase = smp_generic_give_timebase,
- .take_timebase = smp_generic_take_timebase,
-};
-#endif /* CONFIG_SMP */
-
-static void __init maple_use_rtas_reboot_and_halt_if_present(void)
-{
- if (rtas_function_implemented(RTAS_FN_SYSTEM_REBOOT) &&
- rtas_function_implemented(RTAS_FN_POWER_OFF)) {
- ppc_md.restart = rtas_restart;
- pm_power_off = rtas_power_off;
- ppc_md.halt = rtas_halt;
- }
-}
-
-static void __init maple_setup_arch(void)
-{
- /* init to some ~sane value until calibrate_delay() runs */
- loops_per_jiffy = 50000000;
-
- /* Setup SMP callback */
-#ifdef CONFIG_SMP
- smp_ops = &maple_smp_ops;
-#endif
- maple_use_rtas_reboot_and_halt_if_present();
-
- printk(KERN_DEBUG "Using native/NAP idle loop\n");
-
- mmio_nvram_init();
-}
-
-/*
- * This is almost identical to pSeries and CHRP. We need to make that
- * code generic at one point, with appropriate bits in the device-tree to
- * identify the presence of an HT APIC
- */
-static void __init maple_init_IRQ(void)
-{
- struct device_node *root, *np, *mpic_node = NULL;
- const unsigned int *opprop;
- unsigned long openpic_addr = 0;
- int naddr, n, i, opplen, has_isus = 0;
- struct mpic *mpic;
- unsigned int flags = 0;
-
- /* Locate MPIC in the device-tree. Note that there is a bug
- * in Maple device-tree where the type of the controller is
- * open-pic and not interrupt-controller
- */
-
- for_each_node_by_type(np, "interrupt-controller")
- if (of_device_is_compatible(np, "open-pic")) {
- mpic_node = np;
- break;
- }
- if (mpic_node == NULL)
- for_each_node_by_type(np, "open-pic") {
- mpic_node = np;
- break;
- }
- if (mpic_node == NULL) {
- printk(KERN_ERR
- "Failed to locate the MPIC interrupt controller\n");
- return;
- }
-
- /* Find address list in /platform-open-pic */
- root = of_find_node_by_path("/");
- naddr = of_n_addr_cells(root);
- opprop = of_get_property(root, "platform-open-pic", &opplen);
- if (opprop) {
- openpic_addr = of_read_number(opprop, naddr);
- has_isus = (opplen > naddr);
- printk(KERN_DEBUG "OpenPIC addr: %lx, has ISUs: %d\n",
- openpic_addr, has_isus);
- }
-
- BUG_ON(openpic_addr == 0);
-
- /* Check for a big endian MPIC */
- if (of_property_read_bool(np, "big-endian"))
- flags |= MPIC_BIG_ENDIAN;
-
- /* XXX Maple specific bits */
- flags |= MPIC_U3_HT_IRQS;
- /* All U3/U4 are big-endian, older SLOF firmware doesn't encode this */
- flags |= MPIC_BIG_ENDIAN;
-
- /* Setup the openpic driver. More device-tree junks, we hard code no
- * ISUs for now. I'll have to revisit some stuffs with the folks doing
- * the firmware for those
- */
- mpic = mpic_alloc(mpic_node, openpic_addr, flags,
- /*has_isus ? 16 :*/ 0, 0, " MPIC ");
- BUG_ON(mpic == NULL);
-
- /* Add ISUs */
- opplen /= sizeof(u32);
- for (n = 0, i = naddr; i < opplen; i += naddr, n++) {
- unsigned long isuaddr = of_read_number(opprop + i, naddr);
- mpic_assign_isu(mpic, n, isuaddr);
- }
-
- /* All ISUs are setup, complete initialization */
- mpic_init(mpic);
- ppc_md.get_irq = mpic_get_irq;
- of_node_put(mpic_node);
- of_node_put(root);
-}
-
-static void __init maple_progress(char *s, unsigned short hex)
-{
- printk("*** %04x : %s\n", hex, s ? s : "");
-}
-
-
-/*
- * Called very early, MMU is off, device-tree isn't unflattened
- */
-static int __init maple_probe(void)
-{
- if (!of_machine_is_compatible("Momentum,Maple") &&
- !of_machine_is_compatible("Momentum,Apache"))
- return 0;
-
- pm_power_off = maple_power_off;
-
- iommu_init_early_dart(&maple_pci_controller_ops);
-
- return 1;
-}
-
-#ifdef CONFIG_EDAC
-/*
- * Register a platform device for CPC925 memory controller on
- * all boards with U3H (CPC925) bridge.
- */
-static int __init maple_cpc925_edac_setup(void)
-{
- struct platform_device *pdev;
- struct device_node *np = NULL;
- struct resource r;
- int ret;
- volatile void __iomem *mem;
- u32 rev;
-
- np = of_find_node_by_type(NULL, "memory-controller");
- if (!np) {
- printk(KERN_ERR "%s: Unable to find memory-controller node\n",
- __func__);
- return -ENODEV;
- }
-
- ret = of_address_to_resource(np, 0, &r);
- of_node_put(np);
-
- if (ret < 0) {
- printk(KERN_ERR "%s: Unable to get memory-controller reg\n",
- __func__);
- return -ENODEV;
- }
-
- mem = ioremap(r.start, resource_size(&r));
- if (!mem) {
- printk(KERN_ERR "%s: Unable to map memory-controller memory\n",
- __func__);
- return -ENOMEM;
- }
-
- rev = __raw_readl(mem);
- iounmap(mem);
-
- if (rev < 0x34 || rev > 0x3f) { /* U3H */
- printk(KERN_ERR "%s: Non-CPC925(U3H) bridge revision: %02x\n",
- __func__, rev);
- return 0;
- }
-
- pdev = platform_device_register_simple("cpc925_edac", 0, &r, 1);
- if (IS_ERR(pdev))
- return PTR_ERR(pdev);
-
- printk(KERN_INFO "%s: CPC925 platform device created\n", __func__);
-
- return 0;
-}
-machine_device_initcall(maple, maple_cpc925_edac_setup);
-#endif
-
-define_machine(maple) {
- .name = "Maple",
- .probe = maple_probe,
- .setup_arch = maple_setup_arch,
- .discover_phbs = maple_pci_init,
- .init_IRQ = maple_init_IRQ,
- .pci_irq_fixup = maple_pci_irq_fixup,
- .pci_get_legacy_ide_irq = maple_pci_get_legacy_ide_irq,
- .restart = maple_restart,
- .halt = maple_halt,
- .get_boot_time = maple_get_boot_time,
- .set_rtc_time = maple_set_rtc_time,
- .get_rtc_time = maple_get_rtc_time,
- .progress = maple_progress,
- .power_save = power4_idle,
-};
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * (c) Copyright 2004 Benjamin Herrenschmidt (benh@kernel.crashing.org),
- * IBM Corp.
- */
-
-#undef DEBUG
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/time.h>
-#include <linux/adb.h>
-#include <linux/pmu.h>
-#include <linux/interrupt.h>
-#include <linux/mc146818rtc.h>
-#include <linux/bcd.h>
-#include <linux/of_address.h>
-
-#include <asm/sections.h>
-#include <asm/io.h>
-#include <asm/machdep.h>
-#include <asm/time.h>
-
-#include "maple.h"
-
-#ifdef DEBUG
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
-static int maple_rtc_addr;
-
-static int maple_clock_read(int addr)
-{
- outb_p(addr, maple_rtc_addr);
- return inb_p(maple_rtc_addr+1);
-}
-
-static void maple_clock_write(unsigned long val, int addr)
-{
- outb_p(addr, maple_rtc_addr);
- outb_p(val, maple_rtc_addr+1);
-}
-
-void maple_get_rtc_time(struct rtc_time *tm)
-{
- do {
- tm->tm_sec = maple_clock_read(RTC_SECONDS);
- tm->tm_min = maple_clock_read(RTC_MINUTES);
- tm->tm_hour = maple_clock_read(RTC_HOURS);
- tm->tm_mday = maple_clock_read(RTC_DAY_OF_MONTH);
- tm->tm_mon = maple_clock_read(RTC_MONTH);
- tm->tm_year = maple_clock_read(RTC_YEAR);
- } while (tm->tm_sec != maple_clock_read(RTC_SECONDS));
-
- if (!(maple_clock_read(RTC_CONTROL) & RTC_DM_BINARY)
- || RTC_ALWAYS_BCD) {
- tm->tm_sec = bcd2bin(tm->tm_sec);
- tm->tm_min = bcd2bin(tm->tm_min);
- tm->tm_hour = bcd2bin(tm->tm_hour);
- tm->tm_mday = bcd2bin(tm->tm_mday);
- tm->tm_mon = bcd2bin(tm->tm_mon);
- tm->tm_year = bcd2bin(tm->tm_year);
- }
- if ((tm->tm_year + 1900) < 1970)
- tm->tm_year += 100;
-
- tm->tm_wday = -1;
-}
-
-int maple_set_rtc_time(struct rtc_time *tm)
-{
- unsigned char save_control, save_freq_select;
- int sec, min, hour, mon, mday, year;
-
- spin_lock(&rtc_lock);
-
- save_control = maple_clock_read(RTC_CONTROL); /* tell the clock it's being set */
-
- maple_clock_write((save_control|RTC_SET), RTC_CONTROL);
-
- save_freq_select = maple_clock_read(RTC_FREQ_SELECT); /* stop and reset prescaler */
-
- maple_clock_write((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT);
-
- sec = tm->tm_sec;
- min = tm->tm_min;
- hour = tm->tm_hour;
- mon = tm->tm_mon;
- mday = tm->tm_mday;
- year = tm->tm_year;
-
- if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
- sec = bin2bcd(sec);
- min = bin2bcd(min);
- hour = bin2bcd(hour);
- mon = bin2bcd(mon);
- mday = bin2bcd(mday);
- year = bin2bcd(year);
- }
- maple_clock_write(sec, RTC_SECONDS);
- maple_clock_write(min, RTC_MINUTES);
- maple_clock_write(hour, RTC_HOURS);
- maple_clock_write(mon, RTC_MONTH);
- maple_clock_write(mday, RTC_DAY_OF_MONTH);
- maple_clock_write(year, RTC_YEAR);
-
- /* The following flags have to be released exactly in this order,
- * otherwise the DS12887 (popular MC146818A clone with integrated
- * battery and quartz) will not reset the oscillator and will not
- * update precisely 500 ms later. You won't find this mentioned in
- * the Dallas Semiconductor data sheets, but who believes data
- * sheets anyway ... -- Markus Kuhn
- */
- maple_clock_write(save_control, RTC_CONTROL);
- maple_clock_write(save_freq_select, RTC_FREQ_SELECT);
-
- spin_unlock(&rtc_lock);
-
- return 0;
-}
-
-static struct resource rtc_iores = {
- .name = "rtc",
- .flags = IORESOURCE_IO | IORESOURCE_BUSY,
-};
-
-time64_t __init maple_get_boot_time(void)
-{
- struct rtc_time tm;
- struct device_node *rtcs;
-
- rtcs = of_find_compatible_node(NULL, "rtc", "pnpPNP,b00");
- if (rtcs) {
- struct resource r;
- if (of_address_to_resource(rtcs, 0, &r)) {
- printk(KERN_EMERG "Maple: Unable to translate RTC"
- " address\n");
- goto bail;
- }
- if (!(r.flags & IORESOURCE_IO)) {
- printk(KERN_EMERG "Maple: RTC address isn't PIO!\n");
- goto bail;
- }
- maple_rtc_addr = r.start;
- printk(KERN_INFO "Maple: Found RTC at IO 0x%x\n",
- maple_rtc_addr);
- }
- bail:
- of_node_put(rtcs);
- if (maple_rtc_addr == 0) {
- maple_rtc_addr = RTC_PORT(0); /* legacy address */
- printk(KERN_INFO "Maple: No device node for RTC, assuming "
- "legacy address (0x%x)\n", maple_rtc_addr);
- }
-
- rtc_iores.start = maple_rtc_addr;
- rtc_iores.end = maple_rtc_addr + 7;
- request_resource(&ioport_resource, &rtc_iores);
-
- maple_get_rtc_time(&tm);
- return rtc_tm_to_time64(&tm);
-}
-
projects / users / dwmw2 / linux.git / commitdiff