diff options
Diffstat (limited to 'qemu/roms/SLOF/clients/net-snk/oflib')
| -rw-r--r-- | qemu/roms/SLOF/clients/net-snk/oflib/Makefile | 41 | ||||
| -rw-r--r-- | qemu/roms/SLOF/clients/net-snk/oflib/entry.S | 38 | ||||
| -rw-r--r-- | qemu/roms/SLOF/clients/net-snk/oflib/of.c | 715 | ||||
| -rw-r--r-- | qemu/roms/SLOF/clients/net-snk/oflib/pci.c | 60 | ||||
| -rw-r--r-- | qemu/roms/SLOF/clients/net-snk/oflib/rtas.c | 226 |
5 files changed, 1080 insertions, 0 deletions
diff --git a/qemu/roms/SLOF/clients/net-snk/oflib/Makefile b/qemu/roms/SLOF/clients/net-snk/oflib/Makefile new file mode 100644 index 000000000..aad3e89ff --- /dev/null +++ b/qemu/roms/SLOF/clients/net-snk/oflib/Makefile @@ -0,0 +1,41 @@ +# ***************************************************************************** +# * Copyright (c) 2004, 2008 IBM Corporation +# * All rights reserved. +# * This program and the accompanying materials +# * are made available under the terms of the BSD License +# * which accompanies this distribution, and is available at +# * http://www.opensource.org/licenses/bsd-license.php +# * +# * Contributors: +# * IBM Corporation - initial implementation +# ****************************************************************************/ + + +ifndef TOP + TOP = $(shell while ! test -e make.rules; do cd .. ; done; pwd) + export TOP +endif +include $(TOP)/make.rules + +OBJS = rtas.o of.o pci.o +OBJS2 = entry.o + +all: oflib.o + + +oflib.o: $(OBJS) $(OBJS2) + $(LD) $(LDFLAGS) $^ -o oflib.o -r + +clean: + $(RM) -f $(OBJS) $(OBJS2) oflib.o + +include $(TOP)/make.depend + + +#mrproper : clean +# rm -rf .depend +# +#depend : +# @rm -rf .depend ; touch .depend ; \ +# makedepend -v -f.depend -- $(CFLAGS) -- $(OBJS:.o=.c) 2> /dev/null ; \ +# $(CC) -M $(CFLAGS) $(OBJS2:.o=.S) >> .depend diff --git a/qemu/roms/SLOF/clients/net-snk/oflib/entry.S b/qemu/roms/SLOF/clients/net-snk/oflib/entry.S new file mode 100644 index 000000000..f08026762 --- /dev/null +++ b/qemu/roms/SLOF/clients/net-snk/oflib/entry.S @@ -0,0 +1,38 @@ +/****************************************************************************** + * Copyright (c) 2004, 2011 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <macros.h> + + .section ".toc","aw" # TOC entries are needed for relocation +.prom_entry_toc: + .tc _prom_entry[TC],_prom_entry + + +C_ENTRY(call_client_interface) + ld r4, .prom_entry_toc@toc(r2) # Load prom entry point + mflr r0 + std r0, 16(r1) + ld r4, 0(r4) + stdu r1, -128(r1) + std r2,40(r1) + mtctr r4 + bctrl + ld r2,40(r1) + addi r1, r1, 128 + ld r0, 16(r1) + mtlr r0 + blr + + +C_ENTRY(rtas_call_entry) + mtctr r5 + bctr diff --git a/qemu/roms/SLOF/clients/net-snk/oflib/of.c b/qemu/roms/SLOF/clients/net-snk/oflib/of.c new file mode 100644 index 000000000..5c502ac60 --- /dev/null +++ b/qemu/roms/SLOF/clients/net-snk/oflib/of.c @@ -0,0 +1,715 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <stdint.h> +#include <of.h> +#include <rtas.h> +#include <string.h> +#include <libbootmsg.h> +#include <kernel.h> + +extern void call_client_interface(of_arg_t *); + +static int claim_rc = 0; +static void* client_start; +static size_t client_size; + +static inline int +of_0_1(const char *serv) +{ + of_arg_t arg = { + p32cast serv, + 0, 1, + { 0 } + }; + + call_client_interface(&arg); + + return arg.args[0]; +} + +static inline void +of_1_0(const char *serv, int arg0) +{ + of_arg_t arg = { + p32cast serv, + 1, 0, + {arg0, 0} + }; + + call_client_interface(&arg); +} + +static inline unsigned int +of_1_1(const char *serv, int arg0) +{ + of_arg_t arg = { + p32cast serv, + 1, 1, + {arg0, 0} + }; + + call_client_interface(&arg); + return arg.args[1]; +} + +static inline unsigned int +of_1_2(const char *serv, int arg0, int *ret0) +{ + of_arg_t arg = { + p32cast serv, + 1, 2, + {arg0, 0, 0} + }; + + call_client_interface(&arg); + *ret0 = arg.args[2]; + return arg.args[1]; +} + +static inline void +of_2_0(const char *serv, int arg0, int arg1) +{ + of_arg_t arg = { + p32cast serv, + 2, 0, + {arg0, arg1, 0} + }; + + call_client_interface(&arg); +} + +static inline unsigned int +of_2_1(const char *serv, int arg0, int arg1) +{ + of_arg_t arg = { + p32cast serv, + 2, 1, + {arg0, arg1, 0} + }; + + call_client_interface(&arg); + return arg.args[2]; +} + +static inline unsigned int +of_2_2(const char *serv, int arg0, int arg1, int *ret0) +{ + of_arg_t arg = { + p32cast serv, + 2, 2, + {arg0, arg1, 0, 0} + }; + + call_client_interface(&arg); + *ret0 = arg.args[3]; + return arg.args[2]; +} + +static inline unsigned int +of_2_3(const char *serv, int arg0, int arg1, int *ret0, int *ret1) +{ + of_arg_t arg = { + p32cast serv, + 2, 3, + {arg0, arg1, 0, 0, 0} + }; + + call_client_interface(&arg); + *ret0 = arg.args[3]; + *ret1 = arg.args[4]; + return arg.args[2]; +} + +static inline void +of_3_0(const char *serv, int arg0, int arg1, int arg2) +{ + of_arg_t arg = { + p32cast serv, + 3, 0, + {arg0, arg1, arg2, 0} + }; + + call_client_interface(&arg); + return; +} + +static inline unsigned int +of_3_1(const char *serv, int arg0, int arg1, int arg2) +{ + of_arg_t arg = { + p32cast serv, + 3, 1, + {arg0, arg1, arg2, 0} + }; + + call_client_interface(&arg); + return arg.args[3]; +} + +static inline unsigned int +of_3_2(const char *serv, int arg0, int arg1, int arg2, int *ret0) +{ + of_arg_t arg = { + p32cast serv, + 3, 2, + {arg0, arg1, arg2, 0, 0} + }; + + call_client_interface(&arg); + *ret0 = arg.args[4]; + return arg.args[3]; +} + +static inline unsigned int +of_3_3(const char *serv, int arg0, int arg1, int arg2, int *ret0, int *ret1) +{ + of_arg_t arg = { + p32cast serv, + 3, 3, + {arg0, arg1, arg2, 0, 0, 0} + }; + + call_client_interface(&arg); + *ret0 = arg.args[4]; + *ret1 = arg.args[5]; + return arg.args[3]; +} + +static inline unsigned int +of_4_1(const char *serv, int arg0, int arg1, int arg2, int arg3) +{ + of_arg_t arg = { + p32cast serv, + 4, 1, + {arg0, arg1, arg2, arg3, 0} + }; + + call_client_interface(&arg); + return arg.args[4]; +} + +int +of_test(const char *name) +{ + return (int) of_1_1("test", p32cast name); +} + +int +of_interpret_1(void *s, void *ret) +{ + return of_1_2("interpret", p32cast s, ret); +} + +void +of_close(ihandle_t ihandle) +{ + of_1_0("close", ihandle); +} + +int +of_write(ihandle_t ihandle, void *s, int len) +{ + return of_3_1("write", ihandle, p32cast s, len); +} + +int +of_read(ihandle_t ihandle, void *s, int len) +{ + return of_3_1("read", ihandle, p32cast s, len); +} + +int +of_seek(ihandle_t ihandle, int poshi, int poslo) +{ + return of_3_1("seek", ihandle, poshi, poslo); +} + +int +of_getprop(phandle_t phandle, const char *name, void *buf, int len) +{ + return of_4_1("getprop", phandle, p32cast name, p32cast buf, len); +} + +phandle_t +of_peer(phandle_t phandle) +{ + return (phandle_t) of_1_1("peer", phandle); +} + +phandle_t +of_child(phandle_t phandle) +{ + return (phandle_t) of_1_1("child", phandle); +} + +phandle_t +of_parent(phandle_t phandle) +{ + return (phandle_t) of_1_1("parent", phandle); +} + +phandle_t +of_instance_to_package(ihandle_t ihandle) +{ + return (phandle_t) of_1_1("instance-to-package", ihandle); +} + + +phandle_t +of_finddevice(const char *name) +{ + return (phandle_t) of_1_1("finddevice", p32cast name); +} + +ihandle_t +of_open(const char *name) +{ + return (ihandle_t) of_1_1("open", p32cast name); +} + +void * +of_claim(void *start, unsigned int size, unsigned int align) +{ + return(void *)(long)(size_t)of_3_1("claim", p32cast start, size, align); +} + +void +of_release(void *start, unsigned int size) +{ + (void) of_2_0("release", p32cast start, size); +} + +void * +of_call_method_3(const char *name, ihandle_t ihandle, int arg0) +{ + int entry, rc; + rc = of_3_2("call-method", p32cast name, ihandle, arg0, &entry); + return rc != 0 ? 0 : (void *) (long) entry; +} + +int +vpd_read(unsigned int offset, unsigned int length, char *data) +{ + int result; + long tmp = (long) data; + result = of_3_1("rtas-read-vpd", offset, length, (int) tmp); + return result; +} + +int +vpd_write(unsigned int offset, unsigned int length, char *data) +{ + int result; + long tmp = (long) data; + result = of_3_1("rtas-write-vpd", offset, length, (int) tmp); + return result; +} + +static void +ipmi_oem_led_set(int type, int instance, int state) +{ + return of_3_0("set-led", type, instance, state); +} + +int +write_mm_log(char *data, unsigned int length, unsigned short type) +{ + long tmp = (long) data; + + ipmi_oem_led_set(2, 0, 1); + return of_3_1("write-mm-log", (int) tmp, length, type); +} + +int +of_yield(void) +{ + return of_0_1("yield"); +} + +void * +of_set_callback(void *addr) +{ + return (void *) (long) (size_t) of_1_1("set-callback", p32cast addr); +} + +void +bootmsg_warning(short id, const char *str, short lvl) +{ + (void) of_3_0("bootmsg-warning", id, lvl, p32cast str); +} + +void +bootmsg_error(short id, const char *str) +{ + (void) of_2_0("bootmsg-error", id, p32cast str); +} + +/* +void +bootmsg_debugcp(short id, const char *str, short lvl) +{ + (void) of_3_0("bootmsg-debugcp", id, lvl, p32cast str); +} + +void +bootmsg_cp(short id) +{ + (void) of_1_0("bootmsg-cp", id); +} +*/ + +#define CONFIG_SPACE 0 +#define IO_SPACE 1 +#define MEM_SPACE 2 + +#define ASSIGNED_ADDRESS_PROPERTY 0 +#define REG_PROPERTY 1 + +#define DEBUG_TRANSLATE_ADDRESS 0 +#if DEBUG_TRANSLATE_ADDRESS != 0 +#define DEBUG_TR(str...) printf(str) +#else +#define DEBUG_TR(str...) +#endif + +/** + * pci_address_type tries to find the type for which a + * mapping should be done. This is PCI specific and is done by + * looking at the first 32bit of the phys-addr in + * assigned-addresses + * + * @param node the node of the device which requests + * translatation + * @param address the address which needs to be translated + * @param prop_type the type of the property to search in (either REG_PROPERTY or ASSIGNED_ADDRESS_PROPERTY) + * @return the corresponding type (config, i/o, mem) + */ +static int +pci_address_type(phandle_t node, uint64_t address, uint8_t prop_type) +{ + char *prop_name = "assigned-addresses"; + if (prop_type == REG_PROPERTY) + prop_name = "reg"; + /* #address-cells */ + const unsigned int nac = 3; //PCI + /* #size-cells */ + const unsigned int nsc = 2; //PCI + /* up to 11 pairs of (phys-addr(3) size(2)) */ + unsigned char buf[11 * (nac + nsc) * sizeof(int)]; + unsigned int *assigned_ptr; + int result = -1; + int len; + len = of_getprop(node, prop_name, buf, 11 * (nac + nsc) * sizeof(int)); + assigned_ptr = (unsigned int *) &buf[0]; + while (len > 0) { + if ((prop_type == REG_PROPERTY) + && ((assigned_ptr[0] & 0xFF) != 0)) { + //BARs and Expansion ROM must be in assigned-addresses... so in reg + // we only look for those without config space offset set... + assigned_ptr += (nac + nsc); + len -= (nac + nsc) * sizeof(int); + continue; + } + DEBUG_TR("%s %x size %x\n", prop_name, assigned_ptr[2], + assigned_ptr[4]); + if (address >= assigned_ptr[2] + && address <= assigned_ptr[2] + assigned_ptr[4]) { + DEBUG_TR("found a match\n"); + result = (assigned_ptr[0] & 0x03000000) >> 24; + break; + } + assigned_ptr += (nac + nsc); + len -= (nac + nsc) * sizeof(int); + } + /* this can only handle 32bit memory space and should be + * removed as soon as translations for 64bit are available */ + return (result == 3) ? MEM_SPACE : result; +} + +/** + * this is a hack which returns the lower 64 bit of any number of cells + * all the higher bits will silently discarded + * right now this works pretty good as long 64 bit addresses is all we want + * + * @param addr a pointer to the first address cell + * @param nc number of cells addr points to + * @return the lower 64 bit to which addr points + */ +static uint64_t +get_dt_address(uint32_t *addr, uint32_t nc) +{ + uint64_t result = 0; + while (nc--) + result = (result << 32) | *(addr++); + return result; +} + +/** + * this functions tries to find a mapping for the given address + * it assumes that if we have #address-cells == 3 that we are trying + * to do a PCI translation + * + * @param addr a pointer to the address that should be translated + * if a translation has been found the address will + * be modified + * @param type this is required for PCI devices to find the + * correct translation + * @param ranges this is one "range" containing the translation + * information (one range = nac + pnac + nsc) + * @param nac the OF property #address-cells + * @param nsc the OF property #size-cells + * @param pnac the OF property #address-cells from the parent node + * @return -1 if no translation was possible; else 0 + */ +static int +map_one_range(uint64_t *addr, int type, uint32_t *ranges, uint32_t nac, + uint32_t nsc, uint32_t pnac) +{ + long offset; + /* cm - child mapping */ + /* pm - parent mapping */ + uint64_t cm, size, pm; + /* only check for the type if nac == 3 (PCI) */ + DEBUG_TR("type %x, nac %x\n", ranges[0], nac); + if (((ranges[0] & 0x03000000) >> 24) != type && nac == 3) + return -1; + /* okay, it is the same type let's see if we find a mapping */ + size = get_dt_address(ranges + nac + pnac, nsc); + if (nac == 3) /* skip type if PCI */ + cm = get_dt_address(ranges + 1, nac - 1); + else + cm = get_dt_address(ranges, nac); + + DEBUG_TR("\t\tchild_mapping %lx\n", cm); + DEBUG_TR("\t\tsize %lx\n", size); + DEBUG_TR("\t\t*address %lx\n", (uint64_t) * addr); + if (cm + size <= (uint64_t) * addr || cm > (uint64_t) * addr) + /* it is not inside the mapping range */ + return -1; + /* get the offset */ + offset = *addr - cm; + /* and add the offset on the parent mapping */ + if (pnac == 3) /* skip type if PCI */ + pm = get_dt_address(ranges + nac + 1, pnac - 1); + else + pm = get_dt_address(ranges + nac, pnac); + DEBUG_TR("\t\tparent_mapping %lx\n", pm); + *addr = pm + offset; + DEBUG_TR("\t\t*address %lx\n", *addr); + return 0; +} + +/** + * translate_address_dev tries to translate the device specific address + * to a host specific address by walking up in the device tree + * + * @param address a pointer to a 64 bit value which will be + * translated + * @param current_node phandle of the device from which the + * translation will be started + */ +void +translate_address_dev(uint64_t *addr, phandle_t current_node) +{ + unsigned char buf[1024]; + phandle_t parent; + unsigned int pnac; + unsigned int nac; + unsigned int nsc; + int addr_type; + int len; + unsigned int *ranges; + unsigned int one_range; + DEBUG_TR("translate address %lx, node: %lx\n", *addr, current_node); + of_getprop(current_node, "name", buf, 400); + DEBUG_TR("current node: %s\n", buf); + addr_type = + pci_address_type(current_node, *addr, ASSIGNED_ADDRESS_PROPERTY); + if (addr_type == -1) { + // check in "reg" property if not found in "assigned-addresses" + addr_type = pci_address_type(current_node, *addr, REG_PROPERTY); + } + DEBUG_TR("address_type %x\n", addr_type); + current_node = of_parent(current_node); + while (1) { + parent = of_parent(current_node); + if (!parent) { + DEBUG_TR("reached root node...\n"); + break; + } + of_getprop(current_node, "#address-cells", &nac, 4); + of_getprop(current_node, "#size-cells", &nsc, 4); + of_getprop(parent, "#address-cells", &pnac, 4); + one_range = nac + pnac + nsc; + len = of_getprop(current_node, "ranges", buf, 400); + if (len < 0) { + DEBUG_TR("no 'ranges' property; not translatable\n"); + return; + } + ranges = (unsigned int *) &buf[0]; + while (len > 0) { + if (!map_one_range + ((uint64_t *) addr, addr_type, ranges, nac, nsc, + pnac)) + /* after a successful mapping we stop + * going through the ranges */ + break; + ranges += one_range; + len -= one_range * sizeof(int); + } + DEBUG_TR("address %lx\n", *addr); + of_getprop(current_node, "name", buf, 400); + DEBUG_TR("current node: %s\n", buf); + DEBUG_TR("\t#address-cells: %x\n", nac); + DEBUG_TR("\t#size-cells: %x\n", nsc); + of_getprop(parent, "name", buf, 400); + DEBUG_TR("parent node: %s\n", buf); + DEBUG_TR("\t#address-cells: %x\n", pnac); + current_node = parent; + } +} + +static phandle_t +get_boot_device(void) +{ + char buf[1024]; + phandle_t dev = of_finddevice("/chosen"); + + if (dev == -1) { + dev = of_finddevice("/aliases"); + if (dev == -1) + return dev; + of_getprop(dev, "net", buf, 1024); + } else + of_getprop(dev, "bootpath", buf, 1024); + + return of_finddevice(buf); +} + +/** + * translate_address tries to translate the device specific address + * of the boot device to a host specific address + * + * @param address a pointer to a 64 bit value which will be + * translated + */ +void +translate_address(unsigned long *addr) +{ + translate_address_dev((uint64_t*) addr, get_boot_device()); +} + +/** + * get_puid walks up in the device tree until it finds a parent + * node without a reg property. get_puid is assuming that if the + * parent node has no reg property it has found the pci host bridge + * + * this is not the correct way to find PHBs but it seems to work + * for all our systems + * + * @param node the device for which to find the puid + * + * @return the puid or 0 + */ +uint64_t +get_puid(phandle_t node) +{ + uint64_t puid = 0; + uint64_t tmp = 0; + phandle_t curr_node, last_node; + + curr_node = last_node = of_parent(node); + + while (curr_node) { + puid = tmp; + if (of_getprop(curr_node, "reg", &tmp, 8) < 8) { + /* if the found PHB is not directly under + * root we need to translate the found address */ + translate_address_dev(&puid, last_node); + return puid; + } + last_node = curr_node; + curr_node = of_parent(curr_node); + } + + return 0; +} + +int of_get_mac(phandle_t device, char *mac) +{ + uint8_t localmac[8]; + int len; + + len = of_getprop(device, "local-mac-address", localmac, 8); + if (len <= 0) + return -1; + + if (len == 8) { + /* Some bad FDT nodes like veth use a 8-byte wide + * property instead of 6-byte wide MACs... :-( */ + memcpy(mac, &localmac[2], 6); + } + else { + memcpy(mac, localmac, 6); + } + return 0; +} + +static void +get_timebase(unsigned int *timebase) +{ + phandle_t cpu; + phandle_t cpus = of_finddevice("/cpus"); + + if (cpus == -1) + return; + + cpu = of_child(cpus); + + if (cpu == -1) + return; + + of_getprop(cpu, "timebase-frequency", timebase, 4); +} + +int of_glue_init(unsigned int * timebase, + size_t _client_start, size_t _client_size) +{ + phandle_t chosen = of_finddevice("/chosen"); + ihandle_t stdin_ih, stdout_ih; + + client_start = (void *) (long) _client_start; + client_size = _client_size; + + if (chosen == -1) + return -1; + + of_getprop(chosen, "stdin", &stdin_ih, sizeof(ihandle_t)); + of_getprop(chosen, "stdout", &stdout_ih, sizeof(ihandle_t)); + pre_open_ih(0, stdin_ih); + pre_open_ih(1, stdout_ih); + pre_open_ih(2, stdout_ih); + get_timebase(timebase); + rtas_init(); + + claim_rc=(int)(long)of_claim(client_start, client_size, 0); + + return 0; +} + +void of_glue_release(void) +{ + if (claim_rc >= 0) { + of_release(client_start, client_size); + } +} diff --git a/qemu/roms/SLOF/clients/net-snk/oflib/pci.c b/qemu/roms/SLOF/clients/net-snk/oflib/pci.c new file mode 100644 index 000000000..89003ae3e --- /dev/null +++ b/qemu/roms/SLOF/clients/net-snk/oflib/pci.c @@ -0,0 +1,60 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <stdint.h> +#include <rtas.h> +#include <of.h> +#include <pci.h> +#include <string.h> +#include <kernel.h> +#include <cpu.h> +#include <cache.h> + +unsigned int read_io(void *addr, size_t sz) +{ + unsigned int ret; + + switch (sz) { + case 1: + ret = ci_read_8(addr); + break; + case 2: + ret = ci_read_16(addr); + break; + case 4: + ret = ci_read_32(addr); + break; + default: + ret = 0; + } + + return ret; +} + +int write_io(void *addr, unsigned int value, size_t sz) +{ + switch (sz) { + case 1: + ci_write_8(addr, value); + break; + case 2: + ci_write_16(addr, value); + break; + case 4: + ci_write_32(addr, value); + break; + default: + return -1; + } + + return 0; +} diff --git a/qemu/roms/SLOF/clients/net-snk/oflib/rtas.c b/qemu/roms/SLOF/clients/net-snk/oflib/rtas.c new file mode 100644 index 000000000..c514c7079 --- /dev/null +++ b/qemu/roms/SLOF/clients/net-snk/oflib/rtas.c @@ -0,0 +1,226 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <stdint.h> +#include <stdarg.h> +#include <stdio.h> +#include <rtas.h> +#include <of.h> +#include <kernel.h> + +typedef int rtas_arg_t; + +typedef struct { + int token; + int nargs; + int nret; + rtas_arg_t args[16]; + rtas_arg_t *rets; /* Pointer to return values in args[]. */ +} rtas_args_t; + +rtas_args_t rtas_args; + +typedef struct { + void *rtas_start; + void *rtas_entry; + int rtas_size; + phandle_t dev; +} rtas_t; + +extern rtas_t _rtas; +static int instantiate_rtas(void); +void rtas_call_entry(rtas_args_t *, void *, void *); + +int +rtas_token(const char *service) +{ + int token; + int retVal; + if (_rtas.dev == 0) + instantiate_rtas(); + + retVal = of_getprop(_rtas.dev, service, &token, sizeof(token)); + if (retVal == -1) { + token = 0; + } + return token; +} + +int +rtas_call(int token, int nargs, int nret, int *outputs, ...) +{ + va_list list; + int i; + + rtas_args.token = token; + rtas_args.nargs = nargs; + rtas_args.nret = nret; + rtas_args.rets = (rtas_arg_t *) & (rtas_args.args[nargs]); + va_start(list, outputs); + for (i = 0; i < nargs; ++i) { + rtas_args.args[i] = (rtas_arg_t) (va_arg(list, unsigned int)); + } + va_end(list); + + for (i = 0; i < nret; ++i) + rtas_args.rets[i] = 0; + + rtas_call_entry(&rtas_args, _rtas.rtas_start, _rtas.rtas_entry); + if (nret > 0 && outputs != 0) + for (i = 0; i < nret; i++) + outputs[i] = rtas_args.rets[i]; +#if 0 + printf("rtas call %x %x %x args: %x %x %x %x %x %x %x %x\n", + token, nargs, nret, + rtas_args.args[0], + rtas_args.args[1], + rtas_args.args[2], + rtas_args.args[3], + rtas_args.args[4], rtas_args.args[5], outputs[0], outputs[1]); +#endif + return ((nret > 0) ? rtas_args.rets[0] : 0); +} + +rtas_t _rtas; + +static int +instantiate_rtas(void) +{ + long long *rtas_mem_space; + ihandle_t ihandle; + + _rtas.dev = of_finddevice("/rtas"); + if ((long) _rtas.dev < 0) { + printf("\nCould not open /rtas\n"); + return -1; + } + + of_getprop(_rtas.dev, "rtas-size", &_rtas.rtas_size, + sizeof(_rtas.rtas_size)); + + if (_rtas.rtas_size <= 0) { + printf("\nSize of rtas (%x) too small to make sense\n", + _rtas.rtas_size); + return -1; + } + + rtas_mem_space = (long long *) malloc_aligned(_rtas.rtas_size, 0x100); + + if (!rtas_mem_space) { + printf("\nFailed to allocated memory for RTAS\n"); + return -1; + } + + ihandle = of_open("/rtas"); + + if ((long) ihandle < 0) { + printf("Could not open /rtas\n"); + return -1; + } + + if ((long) (_rtas.rtas_entry = of_call_method_3("instantiate-rtas", + ihandle, + p32cast rtas_mem_space)) + > 0) { + _rtas.rtas_start = rtas_mem_space; + } else { + printf("instantiate-rtas failed\n"); + return -1; + } +#if 0 + printf("\ninstantiate-rtas at %x size %x entry %x\n", + _rtas.rtas_start, _rtas.rtas_size, _rtas.rtas_entry); +#endif + return 0; +} + +static int read_pci_config_token = 0; +static int write_pci_config_token = 0; +static int ibm_read_pci_config_token = 0; +static int ibm_write_pci_config_token = 0; +static int get_time_of_day_token = 0; + +void +rtas_init() +{ + int ret; + ret = instantiate_rtas(); + if (ret) + return; + read_pci_config_token = rtas_token("read-pci-config"); + ibm_read_pci_config_token = rtas_token("ibm,read-pci-config"); + write_pci_config_token = rtas_token("write-pci-config"); + ibm_write_pci_config_token = rtas_token("ibm,write-pci-config"); + get_time_of_day_token = rtas_token("get-time-of-day"); +} + + +int +rtas_pci_config_read(long long puid, int size, int bus, int devfn, int offset) +{ + int value[2]; + + if (ibm_read_pci_config_token && puid) { + rtas_call(ibm_read_pci_config_token, 4, 2, value, + bus << 16 | devfn << 8 | offset, + puid >> 32, puid & 0xffffffffULL, size); + } else if (read_pci_config_token) { + rtas_call(read_pci_config_token, 2, 2, value, + bus << 16 | devfn << 8 | offset, size); + } + + return value[1]; +} + +int +rtas_pci_config_write(long long puid, int size, int bus, int devfn, + int offset, int value) +{ + int rc; + + if (ibm_write_pci_config_token && puid) { + rtas_call(ibm_write_pci_config_token, 5, 1, &rc, + bus << 16 | devfn << 8 | offset, + puid >> 32, puid & 0xffffffffULL, size, value); + } else + rtas_call(write_pci_config_token, 3, 1, &rc, + bus << 16 | devfn << 8 | offset, size, value); + + return rc; +} + +int +rtas_get_time_of_day(dtime * get) +{ + int rc = -1; + unsigned int year; + unsigned int month; + unsigned int day; + unsigned int hour; + unsigned int minute; + unsigned int second; + unsigned int nano; + + if (get_time_of_day_token) + rtas_call(get_time_of_day_token, 0, 8, &rc, &year, &month, &day, + &hour, &minute, &second, &nano); + + get->year = year; + get->month = month; + get->day = day; + get->hour = hour; + get->minute = minute; + get->second = second; + get->nano = nano; + + return rc; +} |