diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/ia64/hp/sim/boot/fw-emu.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/ia64/hp/sim/boot/fw-emu.c')
-rw-r--r-- | kernel/arch/ia64/hp/sim/boot/fw-emu.c | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/kernel/arch/ia64/hp/sim/boot/fw-emu.c b/kernel/arch/ia64/hp/sim/boot/fw-emu.c new file mode 100644 index 000000000..87bf9ad8c --- /dev/null +++ b/kernel/arch/ia64/hp/sim/boot/fw-emu.c @@ -0,0 +1,373 @@ +/* + * PAL & SAL emulation. + * + * Copyright (C) 1998-2001 Hewlett-Packard Co + * David Mosberger-Tang <davidm@hpl.hp.com> + */ + +#ifdef CONFIG_PCI +# include <linux/pci.h> +#endif + +#include <linux/efi.h> +#include <asm/io.h> +#include <asm/pal.h> +#include <asm/sal.h> +#include <asm/setup.h> + +#include "ssc.h" + +#define MB (1024*1024UL) + +#define SIMPLE_MEMMAP 1 + +#if SIMPLE_MEMMAP +# define NUM_MEM_DESCS 4 +#else +# define NUM_MEM_DESCS 16 +#endif + +static char fw_mem[( sizeof(struct ia64_boot_param) + + sizeof(efi_system_table_t) + + sizeof(efi_runtime_services_t) + + 1*sizeof(efi_config_table_t) + + sizeof(struct ia64_sal_systab) + + sizeof(struct ia64_sal_desc_entry_point) + + NUM_MEM_DESCS*(sizeof(efi_memory_desc_t)) + + 1024)] __attribute__ ((aligned (8))); + +#define SECS_PER_HOUR (60 * 60) +#define SECS_PER_DAY (SECS_PER_HOUR * 24) + +/* Compute the `struct tm' representation of *T, + offset OFFSET seconds east of UTC, + and store year, yday, mon, mday, wday, hour, min, sec into *TP. + Return nonzero if successful. */ +int +offtime (unsigned long t, efi_time_t *tp) +{ + const unsigned short int __mon_yday[2][13] = + { + /* Normal years. */ + { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, + /* Leap years. */ + { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } + }; + long int days, rem, y; + const unsigned short int *ip; + + days = t / SECS_PER_DAY; + rem = t % SECS_PER_DAY; + while (rem < 0) { + rem += SECS_PER_DAY; + --days; + } + while (rem >= SECS_PER_DAY) { + rem -= SECS_PER_DAY; + ++days; + } + tp->hour = rem / SECS_PER_HOUR; + rem %= SECS_PER_HOUR; + tp->minute = rem / 60; + tp->second = rem % 60; + /* January 1, 1970 was a Thursday. */ + y = 1970; + +# define DIV(a, b) ((a) / (b) - ((a) % (b) < 0)) +# define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400)) +# define __isleap(year) \ + ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) + + while (days < 0 || days >= (__isleap (y) ? 366 : 365)) { + /* Guess a corrected year, assuming 365 days per year. */ + long int yg = y + days / 365 - (days % 365 < 0); + + /* Adjust DAYS and Y to match the guessed year. */ + days -= ((yg - y) * 365 + LEAPS_THRU_END_OF (yg - 1) + - LEAPS_THRU_END_OF (y - 1)); + y = yg; + } + tp->year = y; + ip = __mon_yday[__isleap(y)]; + for (y = 11; days < (long int) ip[y]; --y) + continue; + days -= ip[y]; + tp->month = y + 1; + tp->day = days + 1; + return 1; +} + +extern void pal_emulator_static (void); + +/* Macro to emulate SAL call using legacy IN and OUT calls to CF8, CFC etc.. */ + +#define BUILD_CMD(addr) ((0x80000000 | (addr)) & ~3) + +#define REG_OFFSET(addr) (0x00000000000000FF & (addr)) +#define DEVICE_FUNCTION(addr) (0x000000000000FF00 & (addr)) +#define BUS_NUMBER(addr) (0x0000000000FF0000 & (addr)) + +static efi_status_t +fw_efi_get_time (efi_time_t *tm, efi_time_cap_t *tc) +{ +#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC) + struct { + int tv_sec; /* must be 32bits to work */ + int tv_usec; + } tv32bits; + + ssc((unsigned long) &tv32bits, 0, 0, 0, SSC_GET_TOD); + + memset(tm, 0, sizeof(*tm)); + offtime(tv32bits.tv_sec, tm); + + if (tc) + memset(tc, 0, sizeof(*tc)); +#else +# error Not implemented yet... +#endif + return EFI_SUCCESS; +} + +static void +efi_reset_system (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data) +{ +#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC) + ssc(status, 0, 0, 0, SSC_EXIT); +#else +# error Not implemented yet... +#endif +} + +static efi_status_t +efi_unimplemented (void) +{ + return EFI_UNSUPPORTED; +} + +static struct sal_ret_values +sal_emulator (long index, unsigned long in1, unsigned long in2, + unsigned long in3, unsigned long in4, unsigned long in5, + unsigned long in6, unsigned long in7) +{ + long r9 = 0; + long r10 = 0; + long r11 = 0; + long status; + + /* + * Don't do a "switch" here since that gives us code that + * isn't self-relocatable. + */ + status = 0; + if (index == SAL_FREQ_BASE) { + if (in1 == SAL_FREQ_BASE_PLATFORM) + r9 = 200000000; + else if (in1 == SAL_FREQ_BASE_INTERVAL_TIMER) { + /* + * Is this supposed to be the cr.itc frequency + * or something platform specific? The SAL + * doc ain't exactly clear on this... + */ + r9 = 700000000; + } else if (in1 == SAL_FREQ_BASE_REALTIME_CLOCK) + r9 = 1; + else + status = -1; + } else if (index == SAL_SET_VECTORS) { + ; + } else if (index == SAL_GET_STATE_INFO) { + ; + } else if (index == SAL_GET_STATE_INFO_SIZE) { + ; + } else if (index == SAL_CLEAR_STATE_INFO) { + ; + } else if (index == SAL_MC_RENDEZ) { + ; + } else if (index == SAL_MC_SET_PARAMS) { + ; + } else if (index == SAL_CACHE_FLUSH) { + ; + } else if (index == SAL_CACHE_INIT) { + ; +#ifdef CONFIG_PCI + } else if (index == SAL_PCI_CONFIG_READ) { + /* + * in1 contains the PCI configuration address and in2 + * the size of the read. The value that is read is + * returned via the general register r9. + */ + outl(BUILD_CMD(in1), 0xCF8); + if (in2 == 1) /* Reading byte */ + r9 = inb(0xCFC + ((REG_OFFSET(in1) & 3))); + else if (in2 == 2) /* Reading word */ + r9 = inw(0xCFC + ((REG_OFFSET(in1) & 2))); + else /* Reading dword */ + r9 = inl(0xCFC); + status = PCIBIOS_SUCCESSFUL; + } else if (index == SAL_PCI_CONFIG_WRITE) { + /* + * in1 contains the PCI configuration address, in2 the + * size of the write, and in3 the actual value to be + * written out. + */ + outl(BUILD_CMD(in1), 0xCF8); + if (in2 == 1) /* Writing byte */ + outb(in3, 0xCFC + ((REG_OFFSET(in1) & 3))); + else if (in2 == 2) /* Writing word */ + outw(in3, 0xCFC + ((REG_OFFSET(in1) & 2))); + else /* Writing dword */ + outl(in3, 0xCFC); + status = PCIBIOS_SUCCESSFUL; +#endif /* CONFIG_PCI */ + } else if (index == SAL_UPDATE_PAL) { + ; + } else { + status = -1; + } + return ((struct sal_ret_values) {status, r9, r10, r11}); +} + +struct ia64_boot_param * +sys_fw_init (const char *args, int arglen) +{ + efi_system_table_t *efi_systab; + efi_runtime_services_t *efi_runtime; + efi_config_table_t *efi_tables; + struct ia64_sal_systab *sal_systab; + efi_memory_desc_t *efi_memmap, *md; + unsigned long *pal_desc, *sal_desc; + struct ia64_sal_desc_entry_point *sal_ed; + struct ia64_boot_param *bp; + unsigned char checksum = 0; + char *cp, *cmd_line; + int i = 0; +# define MAKE_MD(typ, attr, start, end) \ + do { \ + md = efi_memmap + i++; \ + md->type = typ; \ + md->pad = 0; \ + md->phys_addr = start; \ + md->virt_addr = 0; \ + md->num_pages = (end - start) >> 12; \ + md->attribute = attr; \ + } while (0) + + memset(fw_mem, 0, sizeof(fw_mem)); + + pal_desc = (unsigned long *) &pal_emulator_static; + sal_desc = (unsigned long *) &sal_emulator; + + cp = fw_mem; + efi_systab = (void *) cp; cp += sizeof(*efi_systab); + efi_runtime = (void *) cp; cp += sizeof(*efi_runtime); + efi_tables = (void *) cp; cp += sizeof(*efi_tables); + sal_systab = (void *) cp; cp += sizeof(*sal_systab); + sal_ed = (void *) cp; cp += sizeof(*sal_ed); + efi_memmap = (void *) cp; cp += NUM_MEM_DESCS*sizeof(*efi_memmap); + bp = (void *) cp; cp += sizeof(*bp); + cmd_line = (void *) cp; + + if (args) { + if (arglen >= 1024) + arglen = 1023; + memcpy(cmd_line, args, arglen); + } else { + arglen = 0; + } + cmd_line[arglen] = '\0'; + + memset(efi_systab, 0, sizeof(*efi_systab)); + efi_systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE; + efi_systab->hdr.revision = ((1 << 16) | 00); + efi_systab->hdr.headersize = sizeof(efi_systab->hdr); + efi_systab->fw_vendor = __pa("H\0e\0w\0l\0e\0t\0t\0-\0P\0a\0c\0k\0a\0r\0d\0\0"); + efi_systab->fw_revision = 1; + efi_systab->runtime = (void *) __pa(efi_runtime); + efi_systab->nr_tables = 1; + efi_systab->tables = __pa(efi_tables); + + efi_runtime->hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE; + efi_runtime->hdr.revision = EFI_RUNTIME_SERVICES_REVISION; + efi_runtime->hdr.headersize = sizeof(efi_runtime->hdr); + efi_runtime->get_time = (void *)__pa(&fw_efi_get_time); + efi_runtime->set_time = (void *)__pa(&efi_unimplemented); + efi_runtime->get_wakeup_time = (void *)__pa(&efi_unimplemented); + efi_runtime->set_wakeup_time = (void *)__pa(&efi_unimplemented); + efi_runtime->set_virtual_address_map = (void *)__pa(&efi_unimplemented); + efi_runtime->get_variable = (void *)__pa(&efi_unimplemented); + efi_runtime->get_next_variable = (void *)__pa(&efi_unimplemented); + efi_runtime->set_variable = (void *)__pa(&efi_unimplemented); + efi_runtime->get_next_high_mono_count = (void *)__pa(&efi_unimplemented); + efi_runtime->reset_system = (void *)__pa(&efi_reset_system); + + efi_tables->guid = SAL_SYSTEM_TABLE_GUID; + efi_tables->table = __pa(sal_systab); + + /* fill in the SAL system table: */ + memcpy(sal_systab->signature, "SST_", 4); + sal_systab->size = sizeof(*sal_systab); + sal_systab->sal_rev_minor = 1; + sal_systab->sal_rev_major = 0; + sal_systab->entry_count = 1; + +#ifdef CONFIG_IA64_GENERIC + strcpy(sal_systab->oem_id, "Generic"); + strcpy(sal_systab->product_id, "IA-64 system"); +#endif + +#ifdef CONFIG_IA64_HP_SIM + strcpy(sal_systab->oem_id, "Hewlett-Packard"); + strcpy(sal_systab->product_id, "HP-simulator"); +#endif + + /* fill in an entry point: */ + sal_ed->type = SAL_DESC_ENTRY_POINT; + sal_ed->pal_proc = __pa(pal_desc[0]); + sal_ed->sal_proc = __pa(sal_desc[0]); + sal_ed->gp = __pa(sal_desc[1]); + + for (cp = (char *) sal_systab; cp < (char *) efi_memmap; ++cp) + checksum += *cp; + + sal_systab->checksum = -checksum; + +#if SIMPLE_MEMMAP + /* simulate free memory at physical address zero */ + MAKE_MD(EFI_BOOT_SERVICES_DATA, EFI_MEMORY_WB, 0*MB, 1*MB); + MAKE_MD(EFI_PAL_CODE, EFI_MEMORY_WB, 1*MB, 2*MB); + MAKE_MD(EFI_CONVENTIONAL_MEMORY, EFI_MEMORY_WB, 2*MB, 130*MB); + MAKE_MD(EFI_CONVENTIONAL_MEMORY, EFI_MEMORY_WB, 4096*MB, 4128*MB); +#else + MAKE_MD( 4, 0x9, 0x0000000000000000, 0x0000000000001000); + MAKE_MD( 7, 0x9, 0x0000000000001000, 0x000000000008a000); + MAKE_MD( 4, 0x9, 0x000000000008a000, 0x00000000000a0000); + MAKE_MD( 5, 0x8000000000000009, 0x00000000000c0000, 0x0000000000100000); + MAKE_MD( 7, 0x9, 0x0000000000100000, 0x0000000004400000); + MAKE_MD( 2, 0x9, 0x0000000004400000, 0x0000000004be5000); + MAKE_MD( 7, 0x9, 0x0000000004be5000, 0x000000007f77e000); + MAKE_MD( 6, 0x8000000000000009, 0x000000007f77e000, 0x000000007fb94000); + MAKE_MD( 6, 0x8000000000000009, 0x000000007fb94000, 0x000000007fb95000); + MAKE_MD( 6, 0x8000000000000009, 0x000000007fb95000, 0x000000007fc00000); + MAKE_MD(13, 0x8000000000000009, 0x000000007fc00000, 0x000000007fc3a000); + MAKE_MD( 7, 0x9, 0x000000007fc3a000, 0x000000007fea0000); + MAKE_MD( 5, 0x8000000000000009, 0x000000007fea0000, 0x000000007fea8000); + MAKE_MD( 7, 0x9, 0x000000007fea8000, 0x000000007feab000); + MAKE_MD( 5, 0x8000000000000009, 0x000000007feab000, 0x000000007ffff000); + MAKE_MD( 7, 0x9, 0x00000000ff400000, 0x0000000104000000); +#endif + + bp->efi_systab = __pa(&fw_mem); + bp->efi_memmap = __pa(efi_memmap); + bp->efi_memmap_size = NUM_MEM_DESCS*sizeof(efi_memory_desc_t); + bp->efi_memdesc_size = sizeof(efi_memory_desc_t); + bp->efi_memdesc_version = 1; + bp->command_line = __pa(cmd_line); + bp->console_info.num_cols = 80; + bp->console_info.num_rows = 25; + bp->console_info.orig_x = 0; + bp->console_info.orig_y = 24; + bp->fpswa = 0; + + return bp; +} |