diff options
Diffstat (limited to 'arch/ppc/platforms/hdpu.c')
| -rw-r--r-- | arch/ppc/platforms/hdpu.c | 1015 |
1 files changed, 0 insertions, 1015 deletions
diff --git a/arch/ppc/platforms/hdpu.c b/arch/ppc/platforms/hdpu.c deleted file mode 100644 index 904b518..0000000 --- a/arch/ppc/platforms/hdpu.c +++ /dev/null @@ -1,1015 +0,0 @@ -/* - * Board setup routines for the Sky Computers HDPU Compute Blade. - * - * Written by Brian Waite <waite@skycomputers.com> - * - * Based on code done by - Mark A. Greer <mgreer@mvista.com> - * Rabeeh Khoury - rabeeh@galileo.co.il - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - - -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/irq.h> -#include <linux/seq_file.h> -#include <linux/platform_device.h> - -#include <linux/initrd.h> -#include <linux/root_dev.h> -#include <linux/smp.h> - -#include <asm/time.h> -#include <asm/machdep.h> -#include <asm/todc.h> -#include <asm/mv64x60.h> -#include <asm/ppcboot.h> -#include <platforms/hdpu.h> -#include <linux/mv643xx.h> -#include <linux/hdpu_features.h> -#include <linux/device.h> -#include <linux/mtd/physmap.h> - -#define BOARD_VENDOR "Sky Computers" -#define BOARD_MACHINE "HDPU-CB-A" - -bd_t ppcboot_bd; -int ppcboot_bd_valid = 0; - -static mv64x60_handle_t bh; - -extern char cmd_line[]; - -unsigned long hdpu_find_end_of_memory(void); -void hdpu_mpsc_progress(char *s, unsigned short hex); -void hdpu_heartbeat(void); - -static void parse_bootinfo(unsigned long r3, - unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7); -static void hdpu_set_l1pe(void); -static void hdpu_cpustate_set(unsigned char new_state); -#ifdef CONFIG_SMP -static DEFINE_SPINLOCK(timebase_lock); -static unsigned int timebase_upper = 0, timebase_lower = 0; -extern int smp_tb_synchronized; - -void __devinit hdpu_tben_give(void); -void __devinit hdpu_tben_take(void); -#endif - -static int __init -hdpu_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) -{ - struct pci_controller *hose = pci_bus_to_hose(dev->bus->number); - - if (hose->index == 0) { - static char pci_irq_table[][4] = { - {HDPU_PCI_0_IRQ, 0, 0, 0}, - {HDPU_PCI_0_IRQ, 0, 0, 0}, - }; - - const long min_idsel = 1, max_idsel = 2, irqs_per_slot = 4; - return PCI_IRQ_TABLE_LOOKUP; - } else { - static char pci_irq_table[][4] = { - {HDPU_PCI_1_IRQ, 0, 0, 0}, - }; - - const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4; - return PCI_IRQ_TABLE_LOOKUP; - } -} - -static void __init hdpu_intr_setup(void) -{ - mv64x60_write(&bh, MV64x60_GPP_IO_CNTL, - (1 | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | - (1 << 6) | (1 << 7) | (1 << 12) | (1 << 16) | - (1 << 18) | (1 << 19) | (1 << 20) | (1 << 21) | - (1 << 22) | (1 << 23) | (1 << 24) | (1 << 25) | - (1 << 26) | (1 << 27) | (1 << 28) | (1 << 29))); - - /* XXXX Erranum FEr PCI-#8 */ - mv64x60_clr_bits(&bh, MV64x60_PCI0_CMD, (1 << 5) | (1 << 9)); - mv64x60_clr_bits(&bh, MV64x60_PCI1_CMD, (1 << 5) | (1 << 9)); - - /* - * Dismiss and then enable interrupt on GPP interrupt cause - * for CPU #0 - */ - mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~((1 << 8) | (1 << 13))); - mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, (1 << 8) | (1 << 13)); - - /* - * Dismiss and then enable interrupt on CPU #0 high cause reg - * BIT25 summarizes GPP interrupts 8-15 - */ - mv64x60_set_bits(&bh, MV64360_IC_CPU0_INTR_MASK_HI, (1 << 25)); -} - -static void __init hdpu_setup_peripherals(void) -{ - unsigned int val; - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN, - HDPU_EMB_FLASH_BASE, HDPU_EMB_FLASH_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN, - HDPU_TBEN_BASE, HDPU_TBEN_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN, - HDPU_NEXUS_ID_BASE, HDPU_NEXUS_ID_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN, - HDPU_INTERNAL_SRAM_BASE, - HDPU_INTERNAL_SRAM_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN); - - bh.ci->disable_window_32bit(&bh, MV64x60_ENET2MEM_4_WIN); - mv64x60_set_32bit_window(&bh, MV64x60_ENET2MEM_4_WIN, 0, 0, 0); - - mv64x60_clr_bits(&bh, MV64x60_PCI0_PCI_DECODE_CNTL, (1 << 3)); - mv64x60_clr_bits(&bh, MV64x60_PCI1_PCI_DECODE_CNTL, (1 << 3)); - mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL, - ((1 << 0) | (1 << 8) | (1 << 16) | (1 << 24))); - - /* Enable pipelining */ - mv64x60_set_bits(&bh, MV64x60_CPU_CONFIG, (1 << 13)); - /* Enable Snoop Pipelining */ - mv64x60_set_bits(&bh, MV64360_D_UNIT_CONTROL_HIGH, (1 << 24)); - - /* - * Change DRAM read buffer assignment. - * Assign read buffer 0 dedicated only for CPU, - * and the rest read buffer 1. - */ - val = mv64x60_read(&bh, MV64360_SDRAM_CONFIG); - val = val & 0x03ffffff; - val = val | 0xf8000000; - mv64x60_write(&bh, MV64360_SDRAM_CONFIG, val); - - /* - * Configure internal SRAM - - * Cache coherent write back, if CONFIG_MV64360_SRAM_CACHE_COHERENT set - * Parity enabled. - * Parity error propagation - * Arbitration not parked for CPU only - * Other bits are reserved. - */ -#ifdef CONFIG_MV64360_SRAM_CACHE_COHERENT - mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x001600b2); -#else - mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x001600b0); -#endif - - hdpu_intr_setup(); -} - -static void __init hdpu_setup_bridge(void) -{ - struct mv64x60_setup_info si; - int i; - - memset(&si, 0, sizeof(si)); - - si.phys_reg_base = HDPU_BRIDGE_REG_BASE; - si.pci_0.enable_bus = 1; - si.pci_0.pci_io.cpu_base = HDPU_PCI0_IO_START_PROC_ADDR; - si.pci_0.pci_io.pci_base_hi = 0; - si.pci_0.pci_io.pci_base_lo = HDPU_PCI0_IO_START_PCI_ADDR; - si.pci_0.pci_io.size = HDPU_PCI0_IO_SIZE; - si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE; - si.pci_0.pci_mem[0].cpu_base = HDPU_PCI0_MEM_START_PROC_ADDR; - si.pci_0.pci_mem[0].pci_base_hi = HDPU_PCI0_MEM_START_PCI_HI_ADDR; - si.pci_0.pci_mem[0].pci_base_lo = HDPU_PCI0_MEM_START_PCI_LO_ADDR; - si.pci_0.pci_mem[0].size = HDPU_PCI0_MEM_SIZE; - si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE; - si.pci_0.pci_cmd_bits = 0; - si.pci_0.latency_timer = 0x80; - - si.pci_1.enable_bus = 1; - si.pci_1.pci_io.cpu_base = HDPU_PCI1_IO_START_PROC_ADDR; - si.pci_1.pci_io.pci_base_hi = 0; - si.pci_1.pci_io.pci_base_lo = HDPU_PCI1_IO_START_PCI_ADDR; - si.pci_1.pci_io.size = HDPU_PCI1_IO_SIZE; - si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE; - si.pci_1.pci_mem[0].cpu_base = HDPU_PCI1_MEM_START_PROC_ADDR; - si.pci_1.pci_mem[0].pci_base_hi = HDPU_PCI1_MEM_START_PCI_HI_ADDR; - si.pci_1.pci_mem[0].pci_base_lo = HDPU_PCI1_MEM_START_PCI_LO_ADDR; - si.pci_1.pci_mem[0].size = HDPU_PCI1_MEM_SIZE; - si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE; - si.pci_1.pci_cmd_bits = 0; - si.pci_1.latency_timer = 0x80; - - for (i = 0; i < MV64x60_CPU2MEM_WINDOWS; i++) { -#if defined(CONFIG_NOT_COHERENT_CACHE) - si.cpu_prot_options[i] = 0; - si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE; - si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE; - si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE; - - si.pci_1.acc_cntl_options[i] = - MV64360_PCI_ACC_CNTL_SNOOP_NONE | - MV64360_PCI_ACC_CNTL_SWAP_NONE | - MV64360_PCI_ACC_CNTL_MBURST_128_BYTES | - MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES; - - si.pci_0.acc_cntl_options[i] = - MV64360_PCI_ACC_CNTL_SNOOP_NONE | - MV64360_PCI_ACC_CNTL_SWAP_NONE | - MV64360_PCI_ACC_CNTL_MBURST_128_BYTES | - MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES; - -#else - si.cpu_prot_options[i] = 0; - si.enet_options[i] = MV64360_ENET2MEM_SNOOP_WB; /* errata */ - si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_WB; /* errata */ - si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_WB; /* errata */ - - si.pci_0.acc_cntl_options[i] = - MV64360_PCI_ACC_CNTL_SNOOP_WB | - MV64360_PCI_ACC_CNTL_SWAP_NONE | - MV64360_PCI_ACC_CNTL_MBURST_32_BYTES | - MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES; - - si.pci_1.acc_cntl_options[i] = - MV64360_PCI_ACC_CNTL_SNOOP_WB | - MV64360_PCI_ACC_CNTL_SWAP_NONE | - MV64360_PCI_ACC_CNTL_MBURST_32_BYTES | - MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES; -#endif - } - - hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_INIT_PCI); - - /* Lookup PCI host bridges */ - mv64x60_init(&bh, &si); - pci_dram_offset = 0; /* System mem at same addr on PCI & cpu bus */ - ppc_md.pci_swizzle = common_swizzle; - ppc_md.pci_map_irq = hdpu_map_irq; - - mv64x60_set_bus(&bh, 0, 0); - bh.hose_a->first_busno = 0; - bh.hose_a->last_busno = 0xff; - bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0); - - bh.hose_b->first_busno = bh.hose_a->last_busno + 1; - mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno); - bh.hose_b->last_busno = 0xff; - bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b, - bh.hose_b->first_busno); - - ppc_md.pci_exclude_device = mv64x60_pci_exclude_device; - - hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_INIT_REG); - /* - * Enabling of PCI internal-vs-external arbitration - * is a platform- and errata-dependent decision. - */ - return; -} - -#if defined(CONFIG_SERIAL_MPSC_CONSOLE) -static void __init hdpu_early_serial_map(void) -{ -#ifdef CONFIG_KGDB - static char first_time = 1; - -#if defined(CONFIG_KGDB_TTYS0) -#define KGDB_PORT 0 -#elif defined(CONFIG_KGDB_TTYS1) -#define KGDB_PORT 1 -#else -#error "Invalid kgdb_tty port" -#endif - - if (first_time) { - gt_early_mpsc_init(KGDB_PORT, - B9600 | CS8 | CREAD | HUPCL | CLOCAL); - first_time = 0; - } - - return; -#endif -} -#endif - -static void hdpu_init2(void) -{ - return; -} - -#if defined(CONFIG_MV643XX_ETH) -static void __init hdpu_fixup_eth_pdata(struct platform_device *pd) -{ - - struct mv643xx_eth_platform_data *eth_pd; - eth_pd = pd->dev.platform_data; - - eth_pd->force_phy_addr = 1; - eth_pd->phy_addr = pd->id; - eth_pd->speed = SPEED_100; - eth_pd->duplex = DUPLEX_FULL; - eth_pd->tx_queue_size = 400; - eth_pd->rx_queue_size = 800; -} -#endif - -static void __init hdpu_fixup_mpsc_pdata(struct platform_device *pd) -{ - - struct mpsc_pdata *pdata; - - pdata = (struct mpsc_pdata *)pd->dev.platform_data; - - pdata->max_idle = 40; - if (ppcboot_bd_valid) - pdata->default_baud = ppcboot_bd.bi_baudrate; - else - pdata->default_baud = HDPU_DEFAULT_BAUD; - pdata->brg_clk_src = HDPU_MPSC_CLK_SRC; - pdata->brg_clk_freq = HDPU_MPSC_CLK_FREQ; -} - -#if defined(CONFIG_HDPU_FEATURES) -static void __init hdpu_fixup_cpustate_pdata(struct platform_device *pd) -{ - struct platform_device *pds[1]; - pds[0] = pd; - mv64x60_pd_fixup(&bh, pds, 1); -} -#endif - -static int hdpu_platform_notify(struct device *dev) -{ - static struct { - char *bus_id; - void ((*rtn) (struct platform_device * pdev)); - } dev_map[] = { - { - MPSC_CTLR_NAME ".0", hdpu_fixup_mpsc_pdata}, -#if defined(CONFIG_MV643XX_ETH) - { - MV643XX_ETH_NAME ".0", hdpu_fixup_eth_pdata}, -#endif -#if defined(CONFIG_HDPU_FEATURES) - { - HDPU_CPUSTATE_NAME ".0", hdpu_fixup_cpustate_pdata}, -#endif - }; - struct platform_device *pdev; - int i; - - if (dev && dev->bus_id) - for (i = 0; i < ARRAY_SIZE(dev_map); i++) - if (!strncmp(dev->bus_id, dev_map[i].bus_id, - BUS_ID_SIZE)) { - - pdev = container_of(dev, - struct platform_device, - dev); - dev_map[i].rtn(pdev); - } - - return 0; -} - -static void __init hdpu_setup_arch(void) -{ - if (ppc_md.progress) - ppc_md.progress("hdpu_setup_arch: enter", 0); -#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_SDA2; -#endif - - ppc_md.heartbeat = hdpu_heartbeat; - - ppc_md.heartbeat_reset = HZ; - ppc_md.heartbeat_count = 1; - - if (ppc_md.progress) - ppc_md.progress("hdpu_setup_arch: Enabling L2 cache", 0); - - /* Enable L1 Parity Bits */ - hdpu_set_l1pe(); - - /* Enable L2 and L3 caches (if 745x) */ - _set_L2CR(0x80080000); - - if (ppc_md.progress) - ppc_md.progress("hdpu_setup_arch: enter", 0); - - hdpu_setup_bridge(); - - hdpu_setup_peripherals(); - -#ifdef CONFIG_SERIAL_MPSC_CONSOLE - hdpu_early_serial_map(); -#endif - - printk("SKY HDPU Compute Blade \n"); - - if (ppc_md.progress) - ppc_md.progress("hdpu_setup_arch: exit", 0); - - hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_OK); - return; -} -static void __init hdpu_init_irq(void) -{ - mv64360_init_irq(); -} - -static void __init hdpu_set_l1pe() -{ - unsigned long ictrl; - asm volatile ("mfspr %0, 1011":"=r" (ictrl):); - ictrl |= ICTRL_EICE | ICTRL_EDC | ICTRL_EICP; - asm volatile ("mtspr 1011, %0"::"r" (ictrl)); -} - -/* - * Set BAT 1 to map 0xf1000000 to end of physical memory space. - */ -static __inline__ void hdpu_set_bat(void) -{ - mb(); - mtspr(SPRN_DBAT1U, 0xf10001fe); - mtspr(SPRN_DBAT1L, 0xf100002a); - mb(); - - return; -} - -unsigned long __init hdpu_find_end_of_memory(void) -{ - return mv64x60_get_mem_size(CONFIG_MV64X60_NEW_BASE, - MV64x60_TYPE_MV64360); -} - -static void hdpu_reset_board(void) -{ - volatile int infinite = 1; - - hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_RESET); - - local_irq_disable(); - - /* Clear all the LEDs */ - mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, ((1 << 4) | - (1 << 5) | (1 << 6))); - - /* disable and invalidate the L2 cache */ - _set_L2CR(0); - _set_L2CR(0x200000); - - /* flush and disable L1 I/D cache */ - __asm__ __volatile__ - ("\n" - "mfspr 3,1008\n" - "ori 5,5,0xcc00\n" - "ori 4,3,0xc00\n" - "andc 5,3,5\n" - "sync\n" - "mtspr 1008,4\n" - "isync\n" "sync\n" "mtspr 1008,5\n" "isync\n" "sync\n"); - - /* Hit the reset bit */ - mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, (1 << 3)); - - while (infinite) - infinite = infinite; - - return; -} - -static void hdpu_restart(char *cmd) -{ - volatile ulong i = 10000000; - - hdpu_reset_board(); - - while (i-- > 0) ; - panic("restart failed\n"); -} - -static void hdpu_halt(void) -{ - local_irq_disable(); - - hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_HALT); - - /* Clear all the LEDs */ - mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, ((1 << 4) | (1 << 5) | - (1 << 6))); - while (1) ; - /* NOTREACHED */ -} - -static void hdpu_power_off(void) -{ - hdpu_halt(); - /* NOTREACHED */ -} - -static int hdpu_show_cpuinfo(struct seq_file *m) -{ - uint pvid; - - pvid = mfspr(SPRN_PVR); - seq_printf(m, "vendor\t\t: Sky Computers\n"); - seq_printf(m, "machine\t\t: HDPU Compute Blade\n"); - seq_printf(m, "PVID\t\t: 0x%x, vendor: %s\n", - pvid, (pvid & (1 << 15) ? "IBM" : "Motorola")); - - return 0; -} - -static void __init hdpu_calibrate_decr(void) -{ - ulong freq; - - if (ppcboot_bd_valid) - freq = ppcboot_bd.bi_busfreq / 4; - else - freq = 133000000; - - printk("time_init: decrementer frequency = %lu.%.6lu MHz\n", - freq / 1000000, freq % 1000000); - - tb_ticks_per_jiffy = freq / HZ; - tb_to_us = mulhwu_scale_factor(freq, 1000000); - - return; -} - -static void parse_bootinfo(unsigned long r3, - unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) -{ - bd_t *bd = NULL; - char *cmdline_start = NULL; - int cmdline_len = 0; - - if (r3) { - if ((r3 & 0xf0000000) == 0) - r3 += KERNELBASE; - if ((r3 & 0xf0000000) == KERNELBASE) { - bd = (void *)r3; - - memcpy(&ppcboot_bd, bd, sizeof(ppcboot_bd)); - ppcboot_bd_valid = 1; - } - } -#ifdef CONFIG_BLK_DEV_INITRD - if (r4 && r5 && r5 > r4) { - if ((r4 & 0xf0000000) == 0) - r4 += KERNELBASE; - if ((r5 & 0xf0000000) == 0) - r5 += KERNELBASE; - if ((r4 & 0xf0000000) == KERNELBASE) { - initrd_start = r4; - initrd_end = r5; - initrd_below_start_ok = 1; - } - } -#endif /* CONFIG_BLK_DEV_INITRD */ - - if (r6 && r7 && r7 > r6) { - if ((r6 & 0xf0000000) == 0) - r6 += KERNELBASE; - if ((r7 & 0xf0000000) == 0) - r7 += KERNELBASE; - if ((r6 & 0xf0000000) == KERNELBASE) { - cmdline_start = (void *)r6; - cmdline_len = (r7 - r6); - strncpy(cmd_line, cmdline_start, cmdline_len); - } - } -} - -void hdpu_heartbeat(void) -{ - if (mv64x60_read(&bh, MV64x60_GPP_VALUE) & (1 << 5)) - mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, (1 << 5)); - else - mv64x60_write(&bh, MV64x60_GPP_VALUE_SET, (1 << 5)); - - ppc_md.heartbeat_count = ppc_md.heartbeat_reset; - -} - -static void __init hdpu_map_io(void) -{ - io_block_mapping(0xf1000000, 0xf1000000, 0x20000, _PAGE_IO); -} - -#ifdef CONFIG_SMP -char hdpu_smp0[] = "SMP Cpu #0"; -char hdpu_smp1[] = "SMP Cpu #1"; - -static irqreturn_t hdpu_smp_cpu0_int_handler(int irq, void *dev_id) -{ - volatile unsigned int doorbell; - - doorbell = mv64x60_read(&bh, MV64360_CPU0_DOORBELL); - - /* Ack the doorbell interrupts */ - mv64x60_write(&bh, MV64360_CPU0_DOORBELL_CLR, doorbell); - - if (doorbell & 1) { - smp_message_recv(0); - } - if (doorbell & 2) { - smp_message_recv(1); - } - if (doorbell & 4) { - smp_message_recv(2); - } - if (doorbell & 8) { - smp_message_recv(3); - } - return IRQ_HANDLED; -} - -static irqreturn_t hdpu_smp_cpu1_int_handler(int irq, void *dev_id) -{ - volatile unsigned int doorbell; - - doorbell = mv64x60_read(&bh, MV64360_CPU1_DOORBELL); - - /* Ack the doorbell interrupts */ - mv64x60_write(&bh, MV64360_CPU1_DOORBELL_CLR, doorbell); - - if (doorbell & 1) { - smp_message_recv(0); - } - if (doorbell & 2) { - smp_message_recv(1); - } - if (doorbell & 4) { - smp_message_recv(2); - } - if (doorbell & 8) { - smp_message_recv(3); - } - return IRQ_HANDLED; -} - -static void smp_hdpu_CPU_two(void) -{ - __asm__ __volatile__ - ("\n" - "lis 3,0x0000\n" - "ori 3,3,0x00c0\n" - "mtspr 26, 3\n" "li 4,0\n" "mtspr 27,4\n" "rfi"); - -} - -static int smp_hdpu_probe(void) -{ - int *cpu_count_reg; - int num_cpus = 0; - - cpu_count_reg = ioremap(HDPU_NEXUS_ID_BASE, HDPU_NEXUS_ID_SIZE); - if (cpu_count_reg) { - num_cpus = (*cpu_count_reg >> 20) & 0x3; - iounmap(cpu_count_reg); - } - - /* Validate the bits in the CPLD. If we could not map the reg, return 2. - * If the register reported 0 or 3, return 2. - * Older CPLD revisions set these bits to all ones (val = 3). - */ - if ((num_cpus < 1) || (num_cpus > 2)) { - printk - ("Unable to determine the number of processors %d . deafulting to 2.\n", - num_cpus); - num_cpus = 2; - } - return num_cpus; -} - -static void -smp_hdpu_message_pass(int target, int msg) -{ - if (msg > 0x3) { - printk("SMP %d: smp_message_pass: unknown msg %d\n", - smp_processor_id(), msg); - return; - } - switch (target) { - case MSG_ALL: - mv64x60_write(&bh, MV64360_CPU0_DOORBELL, 1 << msg); - mv64x60_write(&bh, MV64360_CPU1_DOORBELL, 1 << msg); - break; - case MSG_ALL_BUT_SELF: - if (smp_processor_id()) - mv64x60_write(&bh, MV64360_CPU0_DOORBELL, 1 << msg); - else - mv64x60_write(&bh, MV64360_CPU1_DOORBELL, 1 << msg); - break; - default: - if (target == 0) - mv64x60_write(&bh, MV64360_CPU0_DOORBELL, 1 << msg); - else - mv64x60_write(&bh, MV64360_CPU1_DOORBELL, 1 << msg); - break; - } -} - -static void smp_hdpu_kick_cpu(int nr) -{ - volatile unsigned int *bootaddr; - - if (ppc_md.progress) - ppc_md.progress("smp_hdpu_kick_cpu", 0); - - hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_CPU1_KICK); - - /* Disable BootCS. Must also reduce the windows size to zero. */ - bh.ci->disable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN); - mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN, 0, 0, 0); - - bootaddr = ioremap(HDPU_INTERNAL_SRAM_BASE, HDPU_INTERNAL_SRAM_SIZE); - if (!bootaddr) { - if (ppc_md.progress) - ppc_md.progress("smp_hdpu_kick_cpu: ioremap failed", 0); - return; - } - - memcpy((void *)(bootaddr + 0x40), (void *)&smp_hdpu_CPU_two, 0x20); - - /* map SRAM to 0xfff00000 */ - bh.ci->disable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN, - 0xfff00000, HDPU_INTERNAL_SRAM_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN); - - /* Enable CPU1 arbitration */ - mv64x60_clr_bits(&bh, MV64x60_CPU_MASTER_CNTL, (1 << 9)); - - /* - * Wait 100mSecond until other CPU has reached __secondary_start. - * When it reaches, it is permittable to rever the SRAM mapping etc... - */ - mdelay(100); - *(unsigned long *)KERNELBASE = nr; - asm volatile ("dcbf 0,%0"::"r" (KERNELBASE):"memory"); - - iounmap(bootaddr); - - /* Set up window for internal sram (256KByte insize) */ - bh.ci->disable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN); - mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN, - HDPU_INTERNAL_SRAM_BASE, - HDPU_INTERNAL_SRAM_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN); - /* - * Set up windows for embedded FLASH (using boot CS window). - */ - - bh.ci->disable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN); - mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN, - HDPU_EMB_FLASH_BASE, HDPU_EMB_FLASH_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN); -} - -static void smp_hdpu_setup_cpu(int cpu_nr) -{ - if (cpu_nr == 0) { - if (ppc_md.progress) - ppc_md.progress("smp_hdpu_setup_cpu 0", 0); - mv64x60_write(&bh, MV64360_CPU0_DOORBELL_CLR, 0xff); - mv64x60_write(&bh, MV64360_CPU0_DOORBELL_MASK, 0xff); - request_irq(60, hdpu_smp_cpu0_int_handler, - IRQF_DISABLED, hdpu_smp0, 0); - } - - if (cpu_nr == 1) { - if (ppc_md.progress) - ppc_md.progress("smp_hdpu_setup_cpu 1", 0); - - hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | - CPUSTATE_KERNEL_CPU1_OK); - - /* Enable L1 Parity Bits */ - hdpu_set_l1pe(); - - /* Enable L2 cache */ - _set_L2CR(0); - _set_L2CR(0x80080000); - - mv64x60_write(&bh, MV64360_CPU1_DOORBELL_CLR, 0x0); - mv64x60_write(&bh, MV64360_CPU1_DOORBELL_MASK, 0xff); - request_irq(28, hdpu_smp_cpu1_int_handler, - IRQF_DISABLED, hdpu_smp1, 0); - } - -} - -void __devinit hdpu_tben_give() -{ - volatile unsigned long *val = 0; - - /* By writing 0 to the TBEN_BASE, the timebases is frozen */ - val = ioremap(HDPU_TBEN_BASE, 4); - *val = 0; - mb(); - - spin_lock(&timebase_lock); - timebase_upper = get_tbu(); - timebase_lower = get_tbl(); - spin_unlock(&timebase_lock); - - while (timebase_upper || timebase_lower) - barrier(); - - /* By writing 1 to the TBEN_BASE, the timebases is thawed */ - *val = 1; - mb(); - - iounmap(val); - -} - -void __devinit hdpu_tben_take() -{ - while (!(timebase_upper || timebase_lower)) - barrier(); - - spin_lock(&timebase_lock); - set_tb(timebase_upper, timebase_lower); - timebase_upper = 0; - timebase_lower = 0; - spin_unlock(&timebase_lock); -} - -static struct smp_ops_t hdpu_smp_ops = { - .message_pass = smp_hdpu_message_pass, - .probe = smp_hdpu_probe, - .kick_cpu = smp_hdpu_kick_cpu, - .setup_cpu = smp_hdpu_setup_cpu, - .give_timebase = hdpu_tben_give, - .take_timebase = hdpu_tben_take, -}; -#endif /* CONFIG_SMP */ - -void __init -platform_init(unsigned long r3, unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) -{ - parse_bootinfo(r3, r4, r5, r6, r7); - - isa_mem_base = 0; - - ppc_md.setup_arch = hdpu_setup_arch; - ppc_md.init = hdpu_init2; - ppc_md.show_cpuinfo = hdpu_show_cpuinfo; - ppc_md.init_IRQ = hdpu_init_irq; - ppc_md.get_irq = mv64360_get_irq; - ppc_md.restart = hdpu_restart; - ppc_md.power_off = hdpu_power_off; - ppc_md.halt = hdpu_halt; - ppc_md.find_end_of_memory = hdpu_find_end_of_memory; - ppc_md.calibrate_decr = hdpu_calibrate_decr; - ppc_md.setup_io_mappings = hdpu_map_io; - - bh.p_base = CONFIG_MV64X60_NEW_BASE; - bh.v_base = (unsigned long *)bh.p_base; - - hdpu_set_bat(); - -#if defined(CONFIG_SERIAL_TEXT_DEBUG) - ppc_md.progress = hdpu_mpsc_progress; /* embedded UART */ - mv64x60_progress_init(bh.p_base); -#endif /* CONFIG_SERIAL_TEXT_DEBUG */ - -#ifdef CONFIG_SMP - smp_ops = &hdpu_smp_ops; -#endif /* CONFIG_SMP */ - -#if defined(CONFIG_SERIAL_MPSC) || defined(CONFIG_MV643XX_ETH) - platform_notify = hdpu_platform_notify; -#endif - return; -} - -#if defined(CONFIG_SERIAL_TEXT_DEBUG) && defined(CONFIG_SERIAL_MPSC_CONSOLE) -/* SMP safe version of the serial text debug routine. Uses Semaphore 0 */ -void hdpu_mpsc_progress(char *s, unsigned short hex) -{ - while (mv64x60_read(&bh, MV64360_WHO_AM_I) != - mv64x60_read(&bh, MV64360_SEMAPHORE_0)) { - } - mv64x60_mpsc_progress(s, hex); - mv64x60_write(&bh, MV64360_SEMAPHORE_0, 0xff); -} -#endif - -static void hdpu_cpustate_set(unsigned char new_state) -{ - unsigned int state = (new_state << 21); - mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, (0xff << 21)); - mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, state); -} - -#ifdef CONFIG_MTD_PHYSMAP -static struct mtd_partition hdpu_partitions[] = { - { - .name = "Root FS", - .size = 0x03400000, - .offset = 0, - .mask_flags = 0, - },{ - .name = "User FS", - .size = 0x00800000, - .offset = 0x03400000, - .mask_flags = 0, - },{ - .name = "Kernel Image", - .size = 0x002C0000, - .offset = 0x03C00000, - .mask_flags = 0, - },{ - .name = "bootEnv", - .size = 0x00040000, - .offset = 0x03EC0000, - .mask_flags = 0, - },{ - .name = "bootROM", - .size = 0x00100000, - .offset = 0x03F00000, - .mask_flags = 0, - } -}; - -static int __init hdpu_setup_mtd(void) -{ - - physmap_set_partitions(hdpu_partitions, 5); - return 0; -} - -arch_initcall(hdpu_setup_mtd); -#endif - -#ifdef CONFIG_HDPU_FEATURES - -static struct resource hdpu_cpustate_resources[] = { - [0] = { - .name = "addr base", - .start = MV64x60_GPP_VALUE_SET, - .end = MV64x60_GPP_VALUE_CLR + 1, - .flags = IORESOURCE_MEM, - }, -}; - -static struct resource hdpu_nexus_resources[] = { - [0] = { - .name = "nexus register", - .start = HDPU_NEXUS_ID_BASE, - .end = HDPU_NEXUS_ID_BASE + HDPU_NEXUS_ID_SIZE, - .flags = IORESOURCE_MEM, - }, -}; - -static struct platform_device hdpu_cpustate_device = { - .name = HDPU_CPUSTATE_NAME, - .id = 0, - .num_resources = ARRAY_SIZE(hdpu_cpustate_resources), - .resource = hdpu_cpustate_resources, -}; - -static struct platform_device hdpu_nexus_device = { - .name = HDPU_NEXUS_NAME, - .id = 0, - .num_resources = ARRAY_SIZE(hdpu_nexus_resources), - .resource = hdpu_nexus_resources, -}; - -static int __init hdpu_add_pds(void) -{ - platform_device_register(&hdpu_cpustate_device); - platform_device_register(&hdpu_nexus_device); - return 0; -} - -arch_initcall(hdpu_add_pds); -#endif |
