/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * PROM library initialisation code. * * Copyright (C) 1999,2000,2004,2005,2012 MIPS Technologies, Inc. * All rights reserved. * Authors: Carsten Langgaard * Maciej W. Rozycki * Steven J. Hill */ #include #include #include #include #include #include #include #include #include #include #include #include static int mips_revision_corid; int mips_revision_sconid; /* Bonito64 system controller register base. */ unsigned long _pcictrl_bonito; unsigned long _pcictrl_bonito_pcicfg; /* GT64120 system controller register base */ unsigned long _pcictrl_gt64120; /* MIPS System controller register base */ unsigned long _pcictrl_msc; #ifdef CONFIG_SERIAL_8250_CONSOLE static void __init console_config(void) { char console_string[40]; int baud = 0; char parity = '\0', bits = '\0', flow = '\0'; char *s; s = fw_getenv("modetty0"); if (s) { while (*s >= '0' && *s <= '9') baud = baud*10 + *s++ - '0'; if (*s == ',') s++; if (*s) parity = *s++; if (*s == ',') s++; if (*s) bits = *s++; if (*s == ',') s++; if (*s == 'h') flow = 'r'; } if (baud == 0) baud = 38400; if (parity != 'n' && parity != 'o' && parity != 'e') parity = 'n'; if (bits != '7' && bits != '8') bits = '8'; if (flow == '\0') flow = 'r'; if ((strstr(fw_getcmdline(), "earlycon=")) == NULL) { sprintf(console_string, "uart8250,io,0x3f8,%d%c%c", baud, parity, bits); setup_earlycon(console_string); } if ((strstr(fw_getcmdline(), "console=")) == NULL) { sprintf(console_string, " console=ttyS0,%d%c%c%c", baud, parity, bits, flow); strcat(fw_getcmdline(), console_string); pr_info("Config serial console:%s\n", console_string); } } #endif static void __init mips_nmi_setup(void) { void *base; extern char except_vec_nmi; base = cpu_has_veic ? (void *)(CAC_BASE + 0xa80) : (void *)(CAC_BASE + 0x380); memcpy(base, &except_vec_nmi, 0x80); flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); } static void __init mips_ejtag_setup(void) { void *base; extern char except_vec_ejtag_debug; base = cpu_has_veic ? (void *)(CAC_BASE + 0xa00) : (void *)(CAC_BASE + 0x300); memcpy(base, &except_vec_ejtag_debug, 0x80); flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); } phys_addr_t mips_cpc_default_phys_base(void) { return CPC_BASE_ADDR; } void __init prom_init(void) { mips_display_message("LINUX"); /* * early setup of _pcictrl_bonito so that we can determine * the system controller on a CORE_EMUL board */ _pcictrl_bonito = (unsigned long)ioremap(BONITO_REG_BASE, BONITO_REG_SIZE); mips_revision_corid = MIPS_REVISION_CORID; if (mips_revision_corid == MIPS_REVISION_CORID_CORE_EMUL) { if (BONITO_PCIDID == 0x0001df53 || BONITO_PCIDID == 0x0003df53) mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_BON; else mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_MSC; } mips_revision_sconid = MIPS_REVISION_SCONID; if (mips_revision_sconid == MIPS_REVISION_SCON_OTHER) { switch (mips_revision_corid) { case MIPS_REVISION_CORID_QED_RM5261: case MIPS_REVISION_CORID_CORE_LV: case MIPS_REVISION_CORID_CORE_FPGA: case MIPS_REVISION_CORID_CORE_FPGAR2: mips_revision_sconid = MIPS_REVISION_SCON_GT64120; break; case MIPS_REVISION_CORID_CORE_EMUL_BON: case MIPS_REVISION_CORID_BONITO64: case MIPS_REVISION_CORID_CORE_20K: mips_revision_sconid = MIPS_REVISION_SCON_BONITO; break; case MIPS_REVISION_CORID_CORE_MSC: case MIPS_REVISION_CORID_CORE_FPGA2: case MIPS_REVISION_CORID_CORE_24K: /* * SOCit/ROCit support is essentially identical * but make an attempt to distinguish them */ mips_revision_sconid = MIPS_REVISION_SCON_SOCIT; break; case MIPS_REVISION_CORID_CORE_FPGA3: case MIPS_REVISION_CORID_CORE_FPGA4: case MIPS_REVISION_CORID_CORE_FPGA5: case MIPS_REVISION_CORID_CORE_EMUL_MSC: default: /* See above */ mips_revision_sconid = MIPS_REVISION_SCON_ROCIT; break; } } switch (mips_revision_sconid) { u32 start, map, mask, data; case MIPS_REVISION_SCON_GT64120: /* * Setup the North bridge to do Master byte-lane swapping * when running in bigendian. */ _pcictrl_gt64120 = (unsigned long)ioremap(MIPS_GT_BASE, 0x2000); #ifdef CONFIG_CPU_LITTLE_ENDIAN GT_WRITE(GT_PCI0_CMD_OFS, GT_PCI0_CMD_MBYTESWAP_BIT | GT_PCI0_CMD_SBYTESWAP_BIT); #else GT_WRITE(GT_PCI0_CMD_OFS, 0); #endif /* Fix up PCI I/O mapping if necessary (for Atlas). */ start = GT_READ(GT_PCI0IOLD_OFS); map = GT_READ(GT_PCI0IOREMAP_OFS); if ((start & map) != 0) { map &= ~start; GT_WRITE(GT_PCI0IOREMAP_OFS, map); } set_io_port_base(MALTA_GT_PORT_BASE); break; case MIPS_REVISION_SCON_BONITO: _pcictrl_bonito_pcicfg = (unsigned long)ioremap(BONITO_PCICFG_BASE, BONITO_PCICFG_SIZE); /* * Disable Bonito IOBC. */ BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG & ~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED | BONITO_PCIMEMBASECFG_MEMBASE1_CACHED); /* * Setup the North bridge to do Master byte-lane swapping * when running in bigendian. */ #ifdef CONFIG_CPU_LITTLE_ENDIAN BONITO_BONGENCFG = BONITO_BONGENCFG & ~(BONITO_BONGENCFG_MSTRBYTESWAP | BONITO_BONGENCFG_BYTESWAP); #else BONITO_BONGENCFG = BONITO_BONGENCFG | BONITO_BONGENCFG_MSTRBYTESWAP | BONITO_BONGENCFG_BYTESWAP; #endif set_io_port_base(MALTA_BONITO_PORT_BASE); break; case MIPS_REVISION_SCON_SOCIT: case MIPS_REVISION_SCON_ROCIT: _pcictrl_msc = (unsigned long)ioremap(MIPS_MSC01_PCI_REG_BASE, 0x2000); mips_pci_controller: mb(); MSC_READ(MSC01_PCI_CFG, data); MSC_WRITE(MSC01_PCI_CFG, data & ~MSC01_PCI_CFG_EN_BIT); wmb(); /* Fix up lane swapping. */ #ifdef CONFIG_CPU_LITTLE_ENDIAN MSC_WRITE(MSC01_PCI_SWAP, MSC01_PCI_SWAP_NOSWAP); #else MSC_WRITE(MSC01_PCI_SWAP, MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_IO_SHF | MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_MEM_SHF | MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_BAR0_SHF); #endif /* * Setup the Malta max (2GB) memory for PCI DMA in host bridge * in transparent addressing mode. */ mask = PHYS_OFFSET | PCI_BASE_ADDRESS_MEM_PREFETCH; MSC_WRITE(MSC01_PCI_BAR0, mask); MSC_WRITE(MSC01_PCI_HEAD4, mask); mask &= MSC01_PCI_BAR0_SIZE_MSK; MSC_WRITE(MSC01_PCI_P2SCMSKL, mask); MSC_WRITE(MSC01_PCI_P2SCMAPL, mask); /* Don't handle target retries indefinitely. */ if ((data & MSC01_PCI_CFG_MAXRTRY_MSK) == MSC01_PCI_CFG_MAXRTRY_MSK) data = (data & ~(MSC01_PCI_CFG_MAXRTRY_MSK << MSC01_PCI_CFG_MAXRTRY_SHF)) | ((MSC01_PCI_CFG_MAXRTRY_MSK - 1) << MSC01_PCI_CFG_MAXRTRY_SHF); wmb(); MSC_WRITE(MSC01_PCI_CFG, data); mb(); set_io_port_base(MALTA_MSC_PORT_BASE); break; case MIPS_REVISION_SCON_SOCITSC: case MIPS_REVISION_SCON_SOCITSCP: _pcictrl_msc = (unsigned long)ioremap(MIPS_SOCITSC_PCI_REG_BASE, 0x2000); goto mips_pci_controller; default: /* Unknown system controller */ mips_display_message("SC Error"); while (1); /* We die here... */ } board_nmi_handler_setup = mips_nmi_setup; board_ejtag_handler_setup = mips_ejtag_setup; fw_init_cmdline(); fw_meminit(); #ifdef CONFIG_SERIAL_8250_CONSOLE console_config(); #endif /* Early detection of CMP support */ mips_cpc_probe(); if (!register_cps_smp_ops()) return; if (!register_cmp_smp_ops()) return; if (!register_vsmp_smp_ops()) return; register_up_smp_ops(); }