| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Paul Mackerras | 1595 | 72.67% | 8 | 17.02% |
| Benjamin Herrenschmidt | 378 | 17.22% | 10 | 21.28% |
| Stephen Rothwell | 68 | 3.10% | 3 | 6.38% |
| Marc Zyngier | 45 | 2.05% | 1 | 2.13% |
| Daniel Axtens | 19 | 0.87% | 3 | 6.38% |
| Julia Lawall | 14 | 0.64% | 1 | 2.13% |
| Mathieu Malaterre | 13 | 0.59% | 1 | 2.13% |
| Rob Herring | 12 | 0.55% | 3 | 6.38% |
| Olaf Hering | 6 | 0.27% | 1 | 2.13% |
| Jon Loeliger | 6 | 0.27% | 1 | 2.13% |
| Grant C. Likely | 6 | 0.27% | 1 | 2.13% |
| Jeremy Kerr | 5 | 0.23% | 1 | 2.13% |
| Anton Blanchard | 5 | 0.23% | 2 | 4.26% |
| David Woodhouse | 4 | 0.18% | 1 | 2.13% |
| Alexander Graf | 4 | 0.18% | 1 | 2.13% |
| Michael Ellerman | 3 | 0.14% | 2 | 4.26% |
| Paul Gortmaker | 3 | 0.14% | 1 | 2.13% |
| Alon Bar-Lev | 2 | 0.09% | 1 | 2.13% |
| Thomas Gleixner | 2 | 0.09% | 1 | 2.13% |
| Fabian Frederick | 2 | 0.09% | 1 | 2.13% |
| Kumar Gala | 1 | 0.05% | 1 | 2.13% |
| Finn Thain | 1 | 0.05% | 1 | 2.13% |
| Arnd Bergmann | 1 | 0.05% | 1 | 2.13% |
| Total | 2195 | 47 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Powermac setup and early boot code plus other random bits. * * PowerPC version * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) * * Adapted for Power Macintosh by Paul Mackerras * Copyright (C) 1996 Paul Mackerras (paulus@samba.org) * * Derived from "arch/alpha/kernel/setup.c" * Copyright (C) 1995 Linus Torvalds * * Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org) */ /* * bootup setup stuff.. */ #include <linux/init.h> #include <linux/errno.h> #include <linux/sched.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/stddef.h> #include <linux/unistd.h> #include <linux/ptrace.h> #include <linux/export.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/bitops.h> #include <linux/suspend.h> #include <linux/of_device.h> #include <linux/of_platform.h> #include <asm/reg.h> #include <asm/sections.h> #include <asm/prom.h> #include <asm/io.h> #include <asm/pci-bridge.h> #include <asm/ohare.h> #include <asm/mediabay.h> #include <asm/machdep.h> #include <asm/dma.h> #include <asm/cputable.h> #include <asm/btext.h> #include <asm/pmac_feature.h> #include <asm/time.h> #include <asm/mmu_context.h> #include <asm/iommu.h> #include <asm/smu.h> #include <asm/pmc.h> #include <asm/udbg.h> #include "pmac.h" #undef SHOW_GATWICK_IRQS int ppc_override_l2cr = 0; int ppc_override_l2cr_value; int has_l2cache = 0; int pmac_newworld; static int current_root_goodness = -1; extern struct machdep_calls pmac_md; #define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */ #ifdef CONFIG_PPC64 int sccdbg; #endif sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN; EXPORT_SYMBOL(sys_ctrler); static void pmac_show_cpuinfo(struct seq_file *m) { struct device_node *np; const char *pp; int plen; int mbmodel; unsigned int mbflags; char* mbname; mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_MODEL, 0); mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_FLAGS, 0); if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, (long) &mbname) != 0) mbname = "Unknown"; /* find motherboard type */ seq_printf(m, "machine\t\t: "); np = of_find_node_by_path("/"); if (np != NULL) { pp = of_get_property(np, "model", NULL); if (pp != NULL) seq_printf(m, "%s\n", pp); else seq_printf(m, "PowerMac\n"); pp = of_get_property(np, "compatible", &plen); if (pp != NULL) { seq_printf(m, "motherboard\t:"); while (plen > 0) { int l = strlen(pp) + 1; seq_printf(m, " %s", pp); plen -= l; pp += l; } seq_printf(m, "\n"); } of_node_put(np); } else seq_printf(m, "PowerMac\n"); /* print parsed model */ seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname); seq_printf(m, "pmac flags\t: %08x\n", mbflags); /* find l2 cache info */ np = of_find_node_by_name(NULL, "l2-cache"); if (np == NULL) np = of_find_node_by_type(NULL, "cache"); if (np != NULL) { const unsigned int *ic = of_get_property(np, "i-cache-size", NULL); const unsigned int *dc = of_get_property(np, "d-cache-size", NULL); seq_printf(m, "L2 cache\t:"); has_l2cache = 1; if (of_get_property(np, "cache-unified", NULL) && dc) { seq_printf(m, " %dK unified", *dc / 1024); } else { if (ic) seq_printf(m, " %dK instruction", *ic / 1024); if (dc) seq_printf(m, "%s %dK data", (ic? " +": ""), *dc / 1024); } pp = of_get_property(np, "ram-type", NULL); if (pp) seq_printf(m, " %s", pp); seq_printf(m, "\n"); of_node_put(np); } /* Indicate newworld/oldworld */ seq_printf(m, "pmac-generation\t: %s\n", pmac_newworld ? "NewWorld" : "OldWorld"); } #ifndef CONFIG_ADB_CUDA int find_via_cuda(void) { struct device_node *dn = of_find_node_by_name(NULL, "via-cuda"); if (!dn) return 0; of_node_put(dn); printk("WARNING ! Your machine is CUDA-based but your kernel\n"); printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n"); return 0; } #endif #ifndef CONFIG_ADB_PMU int find_via_pmu(void) { struct device_node *dn = of_find_node_by_name(NULL, "via-pmu"); if (!dn) return 0; of_node_put(dn); printk("WARNING ! Your machine is PMU-based but your kernel\n"); printk(" wasn't compiled with CONFIG_ADB_PMU option !\n"); return 0; } #endif #ifndef CONFIG_PMAC_SMU int smu_init(void) { /* should check and warn if SMU is present */ return 0; } #endif #ifdef CONFIG_PPC32 static volatile u32 *sysctrl_regs; static void __init ohare_init(void) { struct device_node *dn; /* this area has the CPU identification register and some registers used by smp boards */ sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000); /* * Turn on the L2 cache. * We assume that we have a PSX memory controller iff * we have an ohare I/O controller. */ dn = of_find_node_by_name(NULL, "ohare"); if (dn) { of_node_put(dn); if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) { if (sysctrl_regs[4] & 0x10) sysctrl_regs[4] |= 0x04000020; else sysctrl_regs[4] |= 0x04000000; if(has_l2cache) printk(KERN_INFO "Level 2 cache enabled\n"); } } } static void __init l2cr_init(void) { /* Checks "l2cr-value" property in the registry */ if (cpu_has_feature(CPU_FTR_L2CR)) { struct device_node *np; for_each_of_cpu_node(np) { const unsigned int *l2cr = of_get_property(np, "l2cr-value", NULL); if (l2cr) { ppc_override_l2cr = 1; ppc_override_l2cr_value = *l2cr; _set_L2CR(0); _set_L2CR(ppc_override_l2cr_value); } of_node_put(np); break; } } if (ppc_override_l2cr) printk(KERN_INFO "L2CR overridden (0x%x), " "backside cache is %s\n", ppc_override_l2cr_value, (ppc_override_l2cr_value & 0x80000000) ? "enabled" : "disabled"); } #endif static void __init pmac_setup_arch(void) { struct device_node *cpu, *ic; const int *fp; unsigned long pvr; pvr = PVR_VER(mfspr(SPRN_PVR)); /* Set loops_per_jiffy to a half-way reasonable value, for use until calibrate_delay gets called. */ loops_per_jiffy = 50000000 / HZ; for_each_of_cpu_node(cpu) { fp = of_get_property(cpu, "clock-frequency", NULL); if (fp != NULL) { if (pvr >= 0x30 && pvr < 0x80) /* PPC970 etc. */ loops_per_jiffy = *fp / (3 * HZ); else if (pvr == 4 || pvr >= 8) /* 604, G3, G4 etc. */ loops_per_jiffy = *fp / HZ; else /* 601, 603, etc. */ loops_per_jiffy = *fp / (2 * HZ); of_node_put(cpu); break; } } /* See if newworld or oldworld */ ic = of_find_node_with_property(NULL, "interrupt-controller"); if (ic) { pmac_newworld = 1; of_node_put(ic); } /* Lookup PCI hosts */ pmac_pci_init(); #ifdef CONFIG_PPC32 ohare_init(); l2cr_init(); #endif /* CONFIG_PPC32 */ find_via_cuda(); find_via_pmu(); smu_init(); #if IS_ENABLED(CONFIG_NVRAM) pmac_nvram_init(); #endif #ifdef CONFIG_PPC32 #ifdef CONFIG_BLK_DEV_INITRD if (initrd_start) ROOT_DEV = Root_RAM0; else #endif ROOT_DEV = DEFAULT_ROOT_DEVICE; #endif #ifdef CONFIG_ADB if (strstr(boot_command_line, "adb_sync")) { extern int __adb_probe_sync; __adb_probe_sync = 1; } #endif /* CONFIG_ADB */ } #ifdef CONFIG_SCSI void note_scsi_host(struct device_node *node, void *host) { } EXPORT_SYMBOL(note_scsi_host); #endif static int initializing = 1; static int pmac_late_init(void) { initializing = 0; return 0; } machine_late_initcall(powermac, pmac_late_init); void note_bootable_part(dev_t dev, int part, int goodness); /* * This is __ref because we check for "initializing" before * touching any of the __init sensitive things and "initializing" * will be false after __init time. This can't be __init because it * can be called whenever a disk is first accessed. */ void __ref note_bootable_part(dev_t dev, int part, int goodness) { char *p; if (!initializing) return; if ((goodness <= current_root_goodness) && ROOT_DEV != DEFAULT_ROOT_DEVICE) return; p = strstr(boot_command_line, "root="); if (p != NULL && (p == boot_command_line || p[-1] == ' ')) return; ROOT_DEV = dev + part; current_root_goodness = goodness; } #ifdef CONFIG_ADB_CUDA static void __noreturn cuda_restart(void) { struct adb_request req; cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM); for (;;) cuda_poll(); } static void __noreturn cuda_shutdown(void) { struct adb_request req; cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN); for (;;) cuda_poll(); } #else #define cuda_restart() #define cuda_shutdown() #endif #ifndef CONFIG_ADB_PMU #define pmu_restart() #define pmu_shutdown() #endif #ifndef CONFIG_PMAC_SMU #define smu_restart() #define smu_shutdown() #endif static void __noreturn pmac_restart(char *cmd) { switch (sys_ctrler) { case SYS_CTRLER_CUDA: cuda_restart(); break; case SYS_CTRLER_PMU: pmu_restart(); break; case SYS_CTRLER_SMU: smu_restart(); break; default: ; } while (1) ; } static void __noreturn pmac_power_off(void) { switch (sys_ctrler) { case SYS_CTRLER_CUDA: cuda_shutdown(); break; case SYS_CTRLER_PMU: pmu_shutdown(); break; case SYS_CTRLER_SMU: smu_shutdown(); break; default: ; } while (1) ; } static void __noreturn pmac_halt(void) { pmac_power_off(); } /* * Early initialization. */ static void __init pmac_init(void) { /* Enable early btext debug if requested */ if (strstr(boot_command_line, "btextdbg")) { udbg_adb_init_early(); register_early_udbg_console(); } /* Probe motherboard chipset */ pmac_feature_init(); /* Initialize debug stuff */ udbg_scc_init(!!strstr(boot_command_line, "sccdbg")); udbg_adb_init(!!strstr(boot_command_line, "btextdbg")); #ifdef CONFIG_PPC64 iommu_init_early_dart(&pmac_pci_controller_ops); #endif /* SMP Init has to be done early as we need to patch up * cpu_possible_mask before interrupt stacks are allocated * or kaboom... */ #ifdef CONFIG_SMP pmac_setup_smp(); #endif } static int __init pmac_declare_of_platform_devices(void) { struct device_node *np; np = of_find_node_by_name(NULL, "valkyrie"); if (np) { of_platform_device_create(np, "valkyrie", NULL); of_node_put(np); } np = of_find_node_by_name(NULL, "platinum"); if (np) { of_platform_device_create(np, "platinum", NULL); of_node_put(np); } np = of_find_node_by_type(NULL, "smu"); if (np) { of_platform_device_create(np, "smu", NULL); of_node_put(np); } np = of_find_node_by_type(NULL, "fcu"); if (np == NULL) { /* Some machines have strangely broken device-tree */ np = of_find_node_by_path("/u3@0,f8000000/i2c@f8001000/fan@15e"); } if (np) { of_platform_device_create(np, "temperature", NULL); of_node_put(np); } return 0; } machine_device_initcall(powermac, pmac_declare_of_platform_devices); #ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE /* * This is called very early, as part of console_init() (typically just after * time_init()). This function is respondible for trying to find a good * default console on serial ports. It tries to match the open firmware * default output with one of the available serial console drivers. */ static int __init check_pmac_serial_console(void) { struct device_node *prom_stdout = NULL; int offset = 0; const char *name; #ifdef CONFIG_SERIAL_PMACZILOG_TTYS char *devname = "ttyS"; #else char *devname = "ttyPZ"; #endif pr_debug(" -> check_pmac_serial_console()\n"); /* The user has requested a console so this is already set up. */ if (strstr(boot_command_line, "console=")) { pr_debug(" console was specified !\n"); return -EBUSY; } if (!of_chosen) { pr_debug(" of_chosen is NULL !\n"); return -ENODEV; } /* We are getting a weird phandle from OF ... */ /* ... So use the full path instead */ name = of_get_property(of_chosen, "linux,stdout-path", NULL); if (name == NULL) { pr_debug(" no linux,stdout-path !\n"); return -ENODEV; } prom_stdout = of_find_node_by_path(name); if (!prom_stdout) { pr_debug(" can't find stdout package %s !\n", name); return -ENODEV; } pr_debug("stdout is %pOF\n", prom_stdout); if (of_node_name_eq(prom_stdout, "ch-a")) offset = 0; else if (of_node_name_eq(prom_stdout, "ch-b")) offset = 1; else goto not_found; of_node_put(prom_stdout); pr_debug("Found serial console at %s%d\n", devname, offset); return add_preferred_console(devname, offset, NULL); not_found: pr_debug("No preferred console found !\n"); of_node_put(prom_stdout); return -ENODEV; } console_initcall(check_pmac_serial_console); #endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */ /* * Called very early, MMU is off, device-tree isn't unflattened */ static int __init pmac_probe(void) { if (!of_machine_is_compatible("Power Macintosh") && !of_machine_is_compatible("MacRISC")) return 0; #ifdef CONFIG_PPC32 /* isa_io_base gets set in pmac_pci_init */ DMA_MODE_READ = 1; DMA_MODE_WRITE = 2; #endif /* CONFIG_PPC32 */ pm_power_off = pmac_power_off; pmac_init(); return 1; } define_machine(powermac) { .name = "PowerMac", .probe = pmac_probe, .setup_arch = pmac_setup_arch, .show_cpuinfo = pmac_show_cpuinfo, .init_IRQ = pmac_pic_init, .get_irq = NULL, /* changed later */ .pci_irq_fixup = pmac_pci_irq_fixup, .restart = pmac_restart, .halt = pmac_halt, .time_init = pmac_time_init, .get_boot_time = pmac_get_boot_time, .set_rtc_time = pmac_set_rtc_time, .get_rtc_time = pmac_get_rtc_time, .calibrate_decr = pmac_calibrate_decr, .feature_call = pmac_do_feature_call, .progress = udbg_progress, #ifdef CONFIG_PPC64 .power_save = power4_idle, .enable_pmcs = power4_enable_pmcs, #endif /* CONFIG_PPC64 */ #ifdef CONFIG_PPC32 .pcibios_after_init = pmac_pcibios_after_init, .phys_mem_access_prot = pci_phys_mem_access_prot, #endif };
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