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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | // SPDX-License-Identifier: GPL-2.0-or-later /* * GE SBC610 board support * * Author: Martyn Welch <martyn.welch@ge.com> * * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc. * * Based on: mpc86xx_hpcn.c (MPC86xx HPCN board specific routines) * Copyright 2006 Freescale Semiconductor Inc. * * NEC fixup adapted from arch/mips/pci/fixup-lm2e.c */ #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/pci.h> #include <linux/kdev_t.h> #include <linux/delay.h> #include <linux/seq_file.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <asm/time.h> #include <asm/machdep.h> #include <asm/pci-bridge.h> #include <mm/mmu_decl.h> #include <asm/udbg.h> #include <asm/mpic.h> #include <asm/nvram.h> #include <sysdev/fsl_pci.h> #include <sysdev/fsl_soc.h> #include <sysdev/ge/ge_pic.h> #include "mpc86xx.h" #undef DEBUG #ifdef DEBUG #define DBG (fmt...) do { printk(KERN_ERR "SBC610: " fmt); } while (0) #else #define DBG (fmt...) do { } while (0) #endif void __iomem *sbc610_regs; static void __init gef_sbc610_init_irq(void) { struct device_node *cascade_node = NULL; mpc86xx_init_irq(); /* * There is a simple interrupt handler in the main FPGA, this needs * to be cascaded into the MPIC */ cascade_node = of_find_compatible_node(NULL, NULL, "gef,fpga-pic"); if (!cascade_node) { printk(KERN_WARNING "SBC610: No FPGA PIC\n"); return; } gef_pic_init(cascade_node); of_node_put(cascade_node); } static void __init gef_sbc610_setup_arch(void) { struct device_node *regs; printk(KERN_INFO "GE Intelligent Platforms SBC610 6U VPX SBC\n"); #ifdef CONFIG_SMP mpc86xx_smp_init(); #endif fsl_pci_assign_primary(); /* Remap basic board registers */ regs = of_find_compatible_node(NULL, NULL, "gef,fpga-regs"); if (regs) { sbc610_regs = of_iomap(regs, 0); if (sbc610_regs == NULL) printk(KERN_WARNING "Unable to map board registers\n"); of_node_put(regs); } #if defined(CONFIG_MMIO_NVRAM) mmio_nvram_init(); #endif } /* Return the PCB revision */ static unsigned int gef_sbc610_get_pcb_rev(void) { unsigned int reg; reg = ioread32(sbc610_regs); return (reg >> 8) & 0xff; } /* Return the board (software) revision */ static unsigned int gef_sbc610_get_board_rev(void) { unsigned int reg; reg = ioread32(sbc610_regs); return (reg >> 16) & 0xff; } /* Return the FPGA revision */ static unsigned int gef_sbc610_get_fpga_rev(void) { unsigned int reg; reg = ioread32(sbc610_regs); return (reg >> 24) & 0xf; } static void gef_sbc610_show_cpuinfo(struct seq_file *m) { uint svid = mfspr(SPRN_SVR); seq_printf(m, "Vendor\t\t: GE Intelligent Platforms\n"); seq_printf(m, "Revision\t: %u%c\n", gef_sbc610_get_pcb_rev(), ('A' + gef_sbc610_get_board_rev() - 1)); seq_printf(m, "FPGA Revision\t: %u\n", gef_sbc610_get_fpga_rev()); seq_printf(m, "SVR\t\t: 0x%x\n", svid); } static void gef_sbc610_nec_fixup(struct pci_dev *pdev) { unsigned int val; /* Do not do the fixup on other platforms! */ if (!machine_is(gef_sbc610)) return; printk(KERN_INFO "Running NEC uPD720101 Fixup\n"); /* Ensure ports 1, 2, 3, 4 & 5 are enabled */ pci_read_config_dword(pdev, 0xe0, &val); pci_write_config_dword(pdev, 0xe0, (val & ~7) | 0x5); /* System clock is 48-MHz Oscillator and EHCI Enabled. */ pci_write_config_dword(pdev, 0xe4, 1 << 5); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, gef_sbc610_nec_fixup); /* * Called very early, device-tree isn't unflattened * * This function is called to determine whether the BSP is compatible with the * supplied device-tree, which is assumed to be the correct one for the actual * board. It is expected that, in the future, a kernel may support multiple * boards. */ static int __init gef_sbc610_probe(void) { if (of_machine_is_compatible("gef,sbc610")) return 1; return 0; } machine_arch_initcall(gef_sbc610, mpc86xx_common_publish_devices); define_machine(gef_sbc610) { .name = "GE SBC610", .probe = gef_sbc610_probe, .setup_arch = gef_sbc610_setup_arch, .init_IRQ = gef_sbc610_init_irq, .show_cpuinfo = gef_sbc610_show_cpuinfo, .get_irq = mpic_get_irq, .time_init = mpc86xx_time_init, .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, #ifdef CONFIG_PCI .pcibios_fixup_bus = fsl_pcibios_fixup_bus, #endif }; |