Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/ppc/platforms/k2.c b/arch/ppc/platforms/k2.c
new file mode 100644
index 0000000..aacb438
--- /dev/null
+++ b/arch/ppc/platforms/k2.c
@@ -0,0 +1,613 @@
+/*
+ * arch/ppc/platforms/k2.c
+ *
+ * Board setup routines for SBS K2
+ *
+ * Author: Matt Porter <mporter@mvista.com>
+ *
+ * Updated by: Randy Vinson <rvinson@mvista.com.
+ *
+ * 2001-2004 (c) MontaVista, Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/initrd.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/ide.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/time.h>
+#include <asm/i8259.h>
+#include <asm/todc.h>
+#include <asm/bootinfo.h>
+
+#include <syslib/cpc710.h>
+#include "k2.h"
+
+extern unsigned long loops_per_jiffy;
+extern void gen550_progress(char *, unsigned short);
+
+static unsigned int cpu_7xx[16] = {
+ 0, 15, 14, 0, 0, 13, 5, 9, 6, 11, 8, 10, 16, 12, 7, 0
+};
+static unsigned int cpu_6xx[16] = {
+ 0, 0, 14, 0, 0, 13, 5, 9, 6, 11, 8, 10, 0, 12, 7, 0
+};
+
+static inline int __init
+k2_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
+ /*
+ * Check our hose index. If we are zero then we are on the
+ * local PCI hose, otherwise we are on the cPCI hose.
+ */
+ if (!hose->index) {
+ static char pci_irq_table[][4] =
+ /*
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ {1, 0, 0, 0}, /* Ethernet */
+ {5, 5, 5, 5}, /* PMC Site 1 */
+ {6, 6, 6, 6}, /* PMC Site 2 */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* PCI-ISA Bridge */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* unused */
+ {0, 0, 0, 0}, /* unused */
+ {15, 0, 0, 0}, /* M5229 IDE */
+ };
+ const long min_idsel = 3, max_idsel = 17, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+ } else {
+ static char pci_irq_table[][4] =
+ /*
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ {10, 11, 12, 9}, /* cPCI slot 8 */
+ {11, 12, 9, 10}, /* cPCI slot 7 */
+ {12, 9, 10, 11}, /* cPCI slot 6 */
+ {9, 10, 11, 12}, /* cPCI slot 5 */
+ {10, 11, 12, 9}, /* cPCI slot 4 */
+ {11, 12, 9, 10}, /* cPCI slot 3 */
+ {12, 9, 10, 11}, /* cPCI slot 2 */
+ };
+ const long min_idsel = 15, max_idsel = 21, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+ }
+}
+
+void k2_pcibios_fixup(void)
+{
+#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
+ struct pci_dev *ide_dev;
+
+ /*
+ * Enable DMA support on hdc
+ */
+ ide_dev = pci_get_device(PCI_VENDOR_ID_AL,
+ PCI_DEVICE_ID_AL_M5229, NULL);
+
+ if (ide_dev) {
+
+ unsigned long ide_dma_base;
+
+ ide_dma_base = pci_resource_start(ide_dev, 4);
+ outb(0x00, ide_dma_base + 0x2);
+ outb(0x20, ide_dma_base + 0xa);
+ pci_dev_put(ide_dev);
+ }
+#endif
+}
+
+void k2_pcibios_fixup_resources(struct pci_dev *dev)
+{
+ int i;
+
+ if ((dev->vendor == PCI_VENDOR_ID_IBM) &&
+ (dev->device == PCI_DEVICE_ID_IBM_CPC710_PCI64)) {
+ pr_debug("Fixup CPC710 resources\n");
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+ dev->resource[i].start = 0;
+ dev->resource[i].end = 0;
+ }
+ }
+}
+
+void k2_setup_hoses(void)
+{
+ struct pci_controller *hose_a, *hose_b;
+
+ /*
+ * Reconfigure CPC710 memory map so
+ * we have some more PCI memory space.
+ */
+
+ /* Set FPHB mode */
+ __raw_writel(0x808000e0, PGCHP); /* Set FPHB mode */
+
+ /* PCI32 mappings */
+ __raw_writel(0x00000000, K2_PCI32_BAR + PIBAR); /* PCI I/O base */
+ __raw_writel(0x00000000, K2_PCI32_BAR + PMBAR); /* PCI Mem base */
+ __raw_writel(0xf0000000, K2_PCI32_BAR + MSIZE); /* 256MB */
+ __raw_writel(0xfff00000, K2_PCI32_BAR + IOSIZE); /* 1MB */
+ __raw_writel(0xc0000000, K2_PCI32_BAR + SMBAR); /* Base@0xc0000000 */
+ __raw_writel(0x80000000, K2_PCI32_BAR + SIBAR); /* Base@0x80000000 */
+ __raw_writel(0x000000c0, K2_PCI32_BAR + PSSIZE); /* 1GB space */
+ __raw_writel(0x000000c0, K2_PCI32_BAR + PPSIZE); /* 1GB space */
+ __raw_writel(0x00000000, K2_PCI32_BAR + BARPS); /* Base@0x00000000 */
+ __raw_writel(0x00000000, K2_PCI32_BAR + BARPP); /* Base@0x00000000 */
+ __raw_writel(0x00000080, K2_PCI32_BAR + PSBAR); /* Base@0x80 */
+ __raw_writel(0x00000000, K2_PCI32_BAR + PPBAR);
+
+ __raw_writel(0xc0000000, K2_PCI32_BAR + BPMDLK);
+ __raw_writel(0xd0000000, K2_PCI32_BAR + TPMDLK);
+ __raw_writel(0x80000000, K2_PCI32_BAR + BIODLK);
+ __raw_writel(0x80100000, K2_PCI32_BAR + TIODLK);
+ __raw_writel(0xe0008000, K2_PCI32_BAR + DLKCTRL);
+ __raw_writel(0xffffffff, K2_PCI32_BAR + DLKDEV);
+
+ /* PCI64 mappings */
+ __raw_writel(0x00100000, K2_PCI64_BAR + PIBAR); /* PCI I/O base */
+ __raw_writel(0x10000000, K2_PCI64_BAR + PMBAR); /* PCI Mem base */
+ __raw_writel(0xf0000000, K2_PCI64_BAR + MSIZE); /* 256MB */
+ __raw_writel(0xfff00000, K2_PCI64_BAR + IOSIZE); /* 1MB */
+ __raw_writel(0xd0000000, K2_PCI64_BAR + SMBAR); /* Base@0xd0000000 */
+ __raw_writel(0x80100000, K2_PCI64_BAR + SIBAR); /* Base@0x80100000 */
+ __raw_writel(0x000000c0, K2_PCI64_BAR + PSSIZE); /* 1GB space */
+ __raw_writel(0x000000c0, K2_PCI64_BAR + PPSIZE); /* 1GB space */
+ __raw_writel(0x00000000, K2_PCI64_BAR + BARPS); /* Base@0x00000000 */
+ __raw_writel(0x00000000, K2_PCI64_BAR + BARPP); /* Base@0x00000000 */
+
+ /* Setup PCI32 hose */
+ hose_a = pcibios_alloc_controller();
+ if (!hose_a)
+ return;
+
+ hose_a->first_busno = 0;
+ hose_a->last_busno = 0xff;
+ hose_a->pci_mem_offset = K2_PCI32_MEM_BASE;
+
+ pci_init_resource(&hose_a->io_resource,
+ K2_PCI32_LOWER_IO,
+ K2_PCI32_UPPER_IO,
+ IORESOURCE_IO, "PCI32 host bridge");
+
+ pci_init_resource(&hose_a->mem_resources[0],
+ K2_PCI32_LOWER_MEM + K2_PCI32_MEM_BASE,
+ K2_PCI32_UPPER_MEM + K2_PCI32_MEM_BASE,
+ IORESOURCE_MEM, "PCI32 host bridge");
+
+ hose_a->io_space.start = K2_PCI32_LOWER_IO;
+ hose_a->io_space.end = K2_PCI32_UPPER_IO;
+ hose_a->mem_space.start = K2_PCI32_LOWER_MEM;
+ hose_a->mem_space.end = K2_PCI32_UPPER_MEM;
+ hose_a->io_base_virt = (void *)K2_ISA_IO_BASE;
+
+ setup_indirect_pci(hose_a, K2_PCI32_CONFIG_ADDR, K2_PCI32_CONFIG_DATA);
+
+ /* Initialize PCI32 bus registers */
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(0, 0),
+ CPC710_BUS_NUMBER, hose_a->first_busno);
+
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(0, 0),
+ CPC710_SUB_BUS_NUMBER, hose_a->last_busno);
+
+ /* Enable PCI interrupt polling */
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(8, 0), 0x45, 0x80);
+
+ /* Route polled PCI interrupts */
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(8, 0), 0x48, 0x58);
+
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(8, 0), 0x49, 0x07);
+
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(8, 0), 0x4a, 0x31);
+
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(8, 0), 0x4b, 0xb9);
+
+ /* route secondary IDE channel interrupt to IRQ 15 */
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(8, 0), 0x75, 0x0f);
+
+ /* enable IDE controller IDSEL */
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(8, 0), 0x58, 0x48);
+
+ /* Enable IDE function */
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(17, 0), 0x50, 0x03);
+
+ /* Set M5229 IDE controller to native mode */
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(17, 0), PCI_CLASS_PROG, 0xdf);
+
+ hose_a->last_busno = pciauto_bus_scan(hose_a, hose_a->first_busno);
+
+ /* Write out correct max subordinate bus number for hose A */
+ early_write_config_byte(hose_a,
+ hose_a->first_busno,
+ PCI_DEVFN(0, 0),
+ CPC710_SUB_BUS_NUMBER, hose_a->last_busno);
+
+ /* Only setup PCI64 hose if we are in the system slot */
+ if (!(readb(K2_MISC_REG) & K2_SYS_SLOT_MASK)) {
+ /* Setup PCI64 hose */
+ hose_b = pcibios_alloc_controller();
+ if (!hose_b)
+ return;
+
+ hose_b->first_busno = hose_a->last_busno + 1;
+ hose_b->last_busno = 0xff;
+
+ /* Reminder: quit changing the following, it is correct. */
+ hose_b->pci_mem_offset = K2_PCI32_MEM_BASE;
+
+ pci_init_resource(&hose_b->io_resource,
+ K2_PCI64_LOWER_IO,
+ K2_PCI64_UPPER_IO,
+ IORESOURCE_IO, "PCI64 host bridge");
+
+ pci_init_resource(&hose_b->mem_resources[0],
+ K2_PCI64_LOWER_MEM + K2_PCI32_MEM_BASE,
+ K2_PCI64_UPPER_MEM + K2_PCI32_MEM_BASE,
+ IORESOURCE_MEM, "PCI64 host bridge");
+
+ hose_b->io_space.start = K2_PCI64_LOWER_IO;
+ hose_b->io_space.end = K2_PCI64_UPPER_IO;
+ hose_b->mem_space.start = K2_PCI64_LOWER_MEM;
+ hose_b->mem_space.end = K2_PCI64_UPPER_MEM;
+ hose_b->io_base_virt = (void *)K2_ISA_IO_BASE;
+
+ setup_indirect_pci(hose_b,
+ K2_PCI64_CONFIG_ADDR, K2_PCI64_CONFIG_DATA);
+
+ /* Initialize PCI64 bus registers */
+ early_write_config_byte(hose_b,
+ 0,
+ PCI_DEVFN(0, 0),
+ CPC710_SUB_BUS_NUMBER, 0xff);
+
+ early_write_config_byte(hose_b,
+ 0,
+ PCI_DEVFN(0, 0),
+ CPC710_BUS_NUMBER, hose_b->first_busno);
+
+ hose_b->last_busno = pciauto_bus_scan(hose_b,
+ hose_b->first_busno);
+
+ /* Write out correct max subordinate bus number for hose B */
+ early_write_config_byte(hose_b,
+ hose_b->first_busno,
+ PCI_DEVFN(0, 0),
+ CPC710_SUB_BUS_NUMBER,
+ hose_b->last_busno);
+
+ /* Configure PCI64 PSBAR */
+ early_write_config_dword(hose_b,
+ hose_b->first_busno,
+ PCI_DEVFN(0, 0),
+ PCI_BASE_ADDRESS_0,
+ K2_PCI64_SYS_MEM_BASE);
+ }
+
+ /* Configure i8259 level/edge settings */
+ outb(0x62, 0x4d0);
+ outb(0xde, 0x4d1);
+
+#ifdef CONFIG_CPC710_DATA_GATHERING
+ {
+ unsigned int tmp;
+ tmp = __raw_readl(ABCNTL);
+ /* Enable data gathering on both PCI interfaces */
+ __raw_writel(tmp | 0x05000000, ABCNTL);
+ }
+#endif
+
+ ppc_md.pcibios_fixup = k2_pcibios_fixup;
+ ppc_md.pcibios_fixup_resources = k2_pcibios_fixup_resources;
+ ppc_md.pci_swizzle = common_swizzle;
+ ppc_md.pci_map_irq = k2_map_irq;
+}
+
+static int k2_get_bus_speed(void)
+{
+ int bus_speed;
+ unsigned char board_id;
+
+ board_id = *(unsigned char *)K2_BOARD_ID_REG;
+
+ switch (K2_BUS_SPD(board_id)) {
+
+ case 0:
+ default:
+ bus_speed = 100000000;
+ break;
+
+ case 1:
+ bus_speed = 83333333;
+ break;
+
+ case 2:
+ bus_speed = 75000000;
+ break;
+
+ case 3:
+ bus_speed = 66666666;
+ break;
+ }
+ return bus_speed;
+}
+
+static int k2_get_cpu_speed(void)
+{
+ unsigned long hid1;
+ int cpu_speed;
+
+ hid1 = mfspr(SPRN_HID1) >> 28;
+
+ if ((mfspr(SPRN_PVR) >> 16) == 8)
+ hid1 = cpu_7xx[hid1];
+ else
+ hid1 = cpu_6xx[hid1];
+
+ cpu_speed = k2_get_bus_speed() * hid1 / 2;
+ return cpu_speed;
+}
+
+static void __init k2_calibrate_decr(void)
+{
+ int freq, divisor = 4;
+
+ /* determine processor bus speed */
+ freq = k2_get_bus_speed();
+ tb_ticks_per_jiffy = freq / HZ / divisor;
+ tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000);
+}
+
+static int k2_show_cpuinfo(struct seq_file *m)
+{
+ unsigned char k2_geo_bits, k2_system_slot;
+
+ seq_printf(m, "vendor\t\t: SBS\n");
+ seq_printf(m, "machine\t\t: K2\n");
+ seq_printf(m, "cpu speed\t: %dMhz\n", k2_get_cpu_speed() / 1000000);
+ seq_printf(m, "bus speed\t: %dMhz\n", k2_get_bus_speed() / 1000000);
+ seq_printf(m, "memory type\t: SDRAM\n");
+
+ k2_geo_bits = readb(K2_MSIZ_GEO_REG) & K2_GEO_ADR_MASK;
+ k2_system_slot = !(readb(K2_MISC_REG) & K2_SYS_SLOT_MASK);
+ seq_printf(m, "backplane\t: %s slot board",
+ k2_system_slot ? "System" : "Non system");
+ seq_printf(m, "with geographical address %x\n", k2_geo_bits);
+
+ return 0;
+}
+
+TODC_ALLOC();
+
+static void __init k2_setup_arch(void)
+{
+ unsigned int cpu;
+
+ /* Setup TODC access */
+ TODC_INIT(TODC_TYPE_MK48T37, 0, 0,
+ ioremap(K2_RTC_BASE_ADDRESS, K2_RTC_SIZE), 8);
+
+ /* init to some ~sane value until calibrate_delay() runs */
+ loops_per_jiffy = 50000000 / HZ;
+
+ /* make FLASH transactions higher priority than PCI to avoid deadlock */
+ __raw_writel(__raw_readl(SIOC1) | 0x80000000, SIOC1);
+
+ /* Set hardware to access FLASH page 2 */
+ __raw_writel(1 << 29, GPOUT);
+
+ /* Setup PCI host bridges */
+ k2_setup_hoses();
+
+#ifdef CONFIG_BLK_DEV_INITRD
+ if (initrd_start)
+ ROOT_DEV = Root_RAM0;
+ else
+#endif
+#ifdef CONFIG_ROOT_NFS
+ ROOT_DEV = Root_NFS;
+#else
+ ROOT_DEV = Root_HDC1;
+#endif
+
+ /* Identify the system */
+ printk(KERN_INFO "System Identification: SBS K2 - PowerPC 750 @ "
+ "%d Mhz\n", k2_get_cpu_speed() / 1000000);
+ printk(KERN_INFO "Port by MontaVista Software, Inc. "
+ "(source@mvista.com)\n");
+
+ /* Identify the CPU manufacturer */
+ cpu = PVR_REV(mfspr(SPRN_PVR));
+ printk(KERN_INFO "CPU manufacturer: %s [rev=%04x]\n",
+ (cpu & (1 << 15)) ? "IBM" : "Motorola", cpu);
+}
+
+static void k2_restart(char *cmd)
+{
+ local_irq_disable();
+
+ /* Flip FLASH back to page 1 to access firmware image */
+ __raw_writel(0, GPOUT);
+
+ /* SRR0 has system reset vector, SRR1 has default MSR value */
+ /* rfi restores MSR from SRR1 and sets the PC to the SRR0 value */
+ mtspr(SPRN_SRR0, 0xfff00100);
+ mtspr(SPRN_SRR1, 0);
+ __asm__ __volatile__("rfi\n\t");
+
+ /* not reached */
+ for (;;) ;
+}
+
+static void k2_power_off(void)
+{
+ for (;;) ;
+}
+
+static void k2_halt(void)
+{
+ k2_restart(NULL);
+}
+
+/*
+ * Set BAT 3 to map PCI32 I/O space.
+ */
+static __inline__ void k2_set_bat(void)
+{
+ /* wait for all outstanding memory accesses to complete */
+ mb();
+
+ /* setup DBATs */
+ mtspr(SPRN_DBAT2U, 0x80001ffe);
+ mtspr(SPRN_DBAT2L, 0x8000002a);
+ mtspr(SPRN_DBAT3U, 0xf0001ffe);
+ mtspr(SPRN_DBAT3L, 0xf000002a);
+
+ /* wait for updates */
+ mb();
+}
+
+static unsigned long __init k2_find_end_of_memory(void)
+{
+ unsigned long total;
+ unsigned char msize = 7; /* Default to 128MB */
+
+ msize = K2_MEM_SIZE(readb(K2_MSIZ_GEO_REG));
+
+ switch (msize) {
+ case 2:
+ /*
+ * This will break without a lowered
+ * KERNELBASE or CONFIG_HIGHMEM on.
+ * It seems non 1GB builds exist yet,
+ * though.
+ */
+ total = K2_MEM_SIZE_1GB;
+ break;
+ case 3:
+ case 4:
+ total = K2_MEM_SIZE_512MB;
+ break;
+ case 5:
+ case 6:
+ total = K2_MEM_SIZE_256MB;
+ break;
+ case 7:
+ total = K2_MEM_SIZE_128MB;
+ break;
+ default:
+ printk
+ ("K2: Invalid memory size detected, defaulting to 128MB\n");
+ total = K2_MEM_SIZE_128MB;
+ break;
+ }
+ return total;
+}
+
+static void __init k2_map_io(void)
+{
+ io_block_mapping(K2_PCI32_IO_BASE,
+ K2_PCI32_IO_BASE, 0x00200000, _PAGE_IO);
+ io_block_mapping(0xff000000, 0xff000000, 0x01000000, _PAGE_IO);
+}
+
+static void __init k2_init_irq(void)
+{
+ int i;
+
+ for (i = 0; i < 16; i++)
+ irq_desc[i].handler = &i8259_pic;
+
+ i8259_init(0);
+}
+
+void __init platform_init(unsigned long r3, unsigned long r4,
+ unsigned long r5, unsigned long r6, unsigned long r7)
+{
+ parse_bootinfo((struct bi_record *)(r3 + KERNELBASE));
+
+ k2_set_bat();
+
+ isa_io_base = K2_ISA_IO_BASE;
+ isa_mem_base = K2_ISA_MEM_BASE;
+ pci_dram_offset = K2_PCI32_SYS_MEM_BASE;
+
+ ppc_md.setup_arch = k2_setup_arch;
+ ppc_md.show_cpuinfo = k2_show_cpuinfo;
+ ppc_md.init_IRQ = k2_init_irq;
+ ppc_md.get_irq = i8259_irq;
+
+ ppc_md.find_end_of_memory = k2_find_end_of_memory;
+ ppc_md.setup_io_mappings = k2_map_io;
+
+ ppc_md.restart = k2_restart;
+ ppc_md.power_off = k2_power_off;
+ ppc_md.halt = k2_halt;
+
+ ppc_md.time_init = todc_time_init;
+ ppc_md.set_rtc_time = todc_set_rtc_time;
+ ppc_md.get_rtc_time = todc_get_rtc_time;
+ ppc_md.calibrate_decr = k2_calibrate_decr;
+
+ ppc_md.nvram_read_val = todc_direct_read_val;
+ ppc_md.nvram_write_val = todc_direct_write_val;
+
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+ ppc_md.progress = gen550_progress;
+#endif
+}