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grub/grub-core/kern/ieee1275/ieee1275.c
Eric Snowberg 856004c85b ieee1275: decode-unit command for 4 addr cell devs 
decode-unit ( addr len -- phys.lo ... phys.hi )

Convert text unit-string to physical address.

Convert unit-string, the text string representation, to phys.lo ... phys.hi,
the numerical representation of a physical address within the address space
defined by this device node. The number of cells in the list
phys.lo ... phys.hi is determined by the value of the #address-cells
property of this node.

This function is for devices with #address-cells == 4

Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2020-09-21 12:16:25 -04:00

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/* of.c - Access the Open Firmware client interface. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003,2004,2005,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/ieee1275/ieee1275.h>
#include <grub/types.h>
#define IEEE1275_PHANDLE_INVALID ((grub_ieee1275_cell_t) -1)
#define IEEE1275_IHANDLE_INVALID ((grub_ieee1275_cell_t) 0)
#define IEEE1275_CELL_INVALID ((grub_ieee1275_cell_t) -1)
int
grub_ieee1275_finddevice (const char *name, grub_ieee1275_phandle_t *phandlep)
{
struct find_device_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t device;
grub_ieee1275_cell_t phandle;
}
args;
INIT_IEEE1275_COMMON (&args.common, "finddevice", 1, 1);
args.device = (grub_ieee1275_cell_t) name;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*phandlep = args.phandle;
if (args.phandle == IEEE1275_PHANDLE_INVALID)
return -1;
return 0;
}
int
grub_ieee1275_get_property (grub_ieee1275_phandle_t phandle,
const char *property, void *buf,
grub_size_t size, grub_ssize_t *actual)
{
struct get_property_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t phandle;
grub_ieee1275_cell_t prop;
grub_ieee1275_cell_t buf;
grub_ieee1275_cell_t buflen;
grub_ieee1275_cell_t size;
}
args;
INIT_IEEE1275_COMMON (&args.common, "getprop", 4, 1);
args.phandle = phandle;
args.prop = (grub_ieee1275_cell_t) property;
args.buf = (grub_ieee1275_cell_t) buf;
args.buflen = (grub_ieee1275_cell_t) size;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
if (actual)
*actual = (grub_ssize_t) args.size;
if (args.size == IEEE1275_CELL_INVALID)
return -1;
return 0;
}
int
grub_ieee1275_get_integer_property (grub_ieee1275_phandle_t phandle,
const char *property, grub_uint32_t *buf,
grub_size_t size, grub_ssize_t *actual)
{
int ret;
ret = grub_ieee1275_get_property (phandle, property, (void *) buf, size, actual);
#ifndef GRUB_CPU_WORDS_BIGENDIAN
/* Integer properties are always in big endian. */
if (ret == 0)
{
unsigned int i;
size /= sizeof (grub_uint32_t);
for (i = 0; i < size; i++)
buf[i] = grub_be_to_cpu32 (buf[i]);
}
#endif
return ret;
}
int
grub_ieee1275_next_property (grub_ieee1275_phandle_t phandle, char *prev_prop,
char *prop)
{
struct get_property_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t phandle;
grub_ieee1275_cell_t prev_prop;
grub_ieee1275_cell_t next_prop;
grub_ieee1275_cell_t flags;
}
args;
INIT_IEEE1275_COMMON (&args.common, "nextprop", 3, 1);
args.phandle = phandle;
args.prev_prop = (grub_ieee1275_cell_t) prev_prop;
args.next_prop = (grub_ieee1275_cell_t) prop;
args.flags = (grub_ieee1275_cell_t) -1;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
return (int) args.flags;
}
int
grub_ieee1275_get_property_length (grub_ieee1275_phandle_t phandle,
const char *prop, grub_ssize_t *length)
{
struct get_property_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t phandle;
grub_ieee1275_cell_t prop;
grub_ieee1275_cell_t length;
}
args;
INIT_IEEE1275_COMMON (&args.common, "getproplen", 2, 1);
args.phandle = phandle;
args.prop = (grub_ieee1275_cell_t) prop;
args.length = (grub_ieee1275_cell_t) -1;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*length = args.length;
if (args.length == IEEE1275_CELL_INVALID)
return -1;
return 0;
}
int
grub_ieee1275_instance_to_package (grub_ieee1275_ihandle_t ihandle,
grub_ieee1275_phandle_t *phandlep)
{
struct instance_to_package_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t ihandle;
grub_ieee1275_cell_t phandle;
}
args;
INIT_IEEE1275_COMMON (&args.common, "instance-to-package", 1, 1);
args.ihandle = ihandle;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*phandlep = args.phandle;
if (args.phandle == IEEE1275_PHANDLE_INVALID)
return -1;
return 0;
}
int
grub_ieee1275_package_to_path (grub_ieee1275_phandle_t phandle,
char *path, grub_size_t len,
grub_ssize_t *actual)
{
struct instance_to_package_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t phandle;
grub_ieee1275_cell_t buf;
grub_ieee1275_cell_t buflen;
grub_ieee1275_cell_t actual;
}
args;
INIT_IEEE1275_COMMON (&args.common, "package-to-path", 3, 1);
args.phandle = phandle;
args.buf = (grub_ieee1275_cell_t) path;
args.buflen = (grub_ieee1275_cell_t) len;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
if (actual)
*actual = args.actual;
if (args.actual == IEEE1275_CELL_INVALID)
return -1;
return 0;
}
int
grub_ieee1275_instance_to_path (grub_ieee1275_ihandle_t ihandle,
char *path, grub_size_t len,
grub_ssize_t *actual)
{
struct instance_to_path_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t ihandle;
grub_ieee1275_cell_t buf;
grub_ieee1275_cell_t buflen;
grub_ieee1275_cell_t actual;
}
args;
INIT_IEEE1275_COMMON (&args.common, "instance-to-path", 3, 1);
args.ihandle = ihandle;
args.buf = (grub_ieee1275_cell_t) path;
args.buflen = (grub_ieee1275_cell_t) len;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
if (actual)
*actual = args.actual;
if (args.actual == IEEE1275_CELL_INVALID)
return -1;
return 0;
}
int
grub_ieee1275_write (grub_ieee1275_ihandle_t ihandle, const void *buffer,
grub_size_t len, grub_ssize_t *actualp)
{
struct write_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t ihandle;
grub_ieee1275_cell_t buf;
grub_ieee1275_cell_t len;
grub_ieee1275_cell_t actual;
}
args;
INIT_IEEE1275_COMMON (&args.common, "write", 3, 1);
args.ihandle = ihandle;
args.buf = (grub_ieee1275_cell_t) buffer;
args.len = (grub_ieee1275_cell_t) len;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
if (actualp)
*actualp = args.actual;
return 0;
}
int
grub_ieee1275_read (grub_ieee1275_ihandle_t ihandle, void *buffer,
grub_size_t len, grub_ssize_t *actualp)
{
struct write_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t ihandle;
grub_ieee1275_cell_t buf;
grub_ieee1275_cell_t len;
grub_ieee1275_cell_t actual;
}
args;
INIT_IEEE1275_COMMON (&args.common, "read", 3, 1);
args.ihandle = ihandle;
args.buf = (grub_ieee1275_cell_t) buffer;
args.len = (grub_ieee1275_cell_t) len;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
if (actualp)
*actualp = args.actual;
return 0;
}
int
grub_ieee1275_seek (grub_ieee1275_ihandle_t ihandle, grub_disk_addr_t pos,
grub_ssize_t *result)
{
struct write_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t ihandle;
grub_ieee1275_cell_t pos_hi;
grub_ieee1275_cell_t pos_lo;
grub_ieee1275_cell_t result;
}
args;
INIT_IEEE1275_COMMON (&args.common, "seek", 3, 1);
args.ihandle = ihandle;
/* To prevent stupid gcc warning. */
#if GRUB_IEEE1275_CELL_SIZEOF >= 8
args.pos_hi = 0;
args.pos_lo = pos;
#else
args.pos_hi = (grub_ieee1275_cell_t) (pos >> (8 * GRUB_IEEE1275_CELL_SIZEOF));
args.pos_lo = (grub_ieee1275_cell_t)
(pos & ((1ULL << (8 * GRUB_IEEE1275_CELL_SIZEOF)) - 1));
#endif
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
if (result)
*result = args.result;
return 0;
}
int
grub_ieee1275_peer (grub_ieee1275_phandle_t node,
grub_ieee1275_phandle_t *result)
{
struct peer_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t node;
grub_ieee1275_cell_t result;
}
args;
INIT_IEEE1275_COMMON (&args.common, "peer", 1, 1);
args.node = node;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*result = args.result;
if (args.result == 0)
return -1;
return 0;
}
int
grub_ieee1275_child (grub_ieee1275_phandle_t node,
grub_ieee1275_phandle_t *result)
{
struct child_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t node;
grub_ieee1275_cell_t result;
}
args;
INIT_IEEE1275_COMMON (&args.common, "child", 1, 1);
args.node = node;
args.result = IEEE1275_PHANDLE_INVALID;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*result = args.result;
if (args.result == 0)
return -1;
return 0;
}
int
grub_ieee1275_parent (grub_ieee1275_phandle_t node,
grub_ieee1275_phandle_t *result)
{
struct parent_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t node;
grub_ieee1275_cell_t result;
}
args;
INIT_IEEE1275_COMMON (&args.common, "parent", 1, 1);
args.node = node;
args.result = IEEE1275_PHANDLE_INVALID;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*result = args.result;
return 0;
}
int
grub_ieee1275_interpret (const char *command, grub_ieee1275_cell_t *catch)
{
struct enter_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t command;
grub_ieee1275_cell_t catch;
}
args;
if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_CANNOT_INTERPRET))
return -1;
INIT_IEEE1275_COMMON (&args.common, "interpret", 1, 1);
args.command = (grub_ieee1275_cell_t) command;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
if (catch)
*catch = args.catch;
return 0;
}
int
grub_ieee1275_enter (void)
{
struct enter_args
{
struct grub_ieee1275_common_hdr common;
}
args;
INIT_IEEE1275_COMMON (&args.common, "enter", 0, 0);
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
return 0;
}
void
grub_ieee1275_exit (void)
{
struct exit_args
{
struct grub_ieee1275_common_hdr common;
}
args;
INIT_IEEE1275_COMMON (&args.common, "exit", 0, 0);
IEEE1275_CALL_ENTRY_FN (&args);
for (;;) ;
}
int
grub_ieee1275_open (const char *path, grub_ieee1275_ihandle_t *result)
{
struct open_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t path;
grub_ieee1275_cell_t result;
}
args;
INIT_IEEE1275_COMMON (&args.common, "open", 1, 1);
args.path = (grub_ieee1275_cell_t) path;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*result = args.result;
if (args.result == IEEE1275_IHANDLE_INVALID)
return -1;
return 0;
}
int
grub_ieee1275_close (grub_ieee1275_ihandle_t ihandle)
{
struct close_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t ihandle;
}
args;
INIT_IEEE1275_COMMON (&args.common, "close", 1, 0);
args.ihandle = ihandle;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
return 0;
}
int
grub_ieee1275_decode_unit4 (grub_ieee1275_ihandle_t ihandle,
void *addr, grub_size_t size,
grub_uint32_t *phy_lo, grub_uint32_t *phy_hi,
grub_uint32_t *lun_lo, grub_uint32_t *lun_hi)
{
struct decode_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t method;
grub_ieee1275_cell_t ihandle;
grub_ieee1275_cell_t size;
grub_ieee1275_cell_t addr;
grub_ieee1275_cell_t catch_result;
grub_ieee1275_cell_t tgt_h;
grub_ieee1275_cell_t tgt_l;
grub_ieee1275_cell_t lun_h;
grub_ieee1275_cell_t lun_l;
}
args;
INIT_IEEE1275_COMMON (&args.common, "call-method", 4, 5);
args.method = (grub_ieee1275_cell_t) "decode-unit";
args.ihandle = ihandle;
args.size = size;
args.addr = (grub_ieee1275_cell_t) addr;
args.catch_result = 1;
if ((IEEE1275_CALL_ENTRY_FN (&args) == -1) || (args.catch_result))
{
grub_error (GRUB_ERR_OUT_OF_RANGE, "decode-unit failed\n");
return -1;
}
*phy_lo = args.tgt_l;
*phy_hi = args.tgt_h;
*lun_lo = args.lun_l;
*lun_hi = args.lun_h;
return 0;
}
int
grub_ieee1275_claim (grub_addr_t addr, grub_size_t size, unsigned int align,
grub_addr_t *result)
{
struct claim_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t addr;
grub_ieee1275_cell_t size;
grub_ieee1275_cell_t align;
grub_ieee1275_cell_t base;
}
args;
INIT_IEEE1275_COMMON (&args.common, "claim", 3, 1);
args.addr = (grub_ieee1275_cell_t) addr;
args.size = (grub_ieee1275_cell_t) size;
args.align = (grub_ieee1275_cell_t) align;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
if (result)
*result = args.base;
if (args.base == IEEE1275_CELL_INVALID)
return -1;
return 0;
}
int
grub_ieee1275_release (grub_addr_t addr, grub_size_t size)
{
struct release_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t addr;
grub_ieee1275_cell_t size;
}
args;
INIT_IEEE1275_COMMON (&args.common, "release", 2, 0);
args.addr = addr;
args.size = size;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
return 0;
}
int
grub_ieee1275_set_property (grub_ieee1275_phandle_t phandle,
const char *propname, const void *buf,
grub_size_t size, grub_ssize_t *actual)
{
struct set_property_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t phandle;
grub_ieee1275_cell_t propname;
grub_ieee1275_cell_t buf;
grub_ieee1275_cell_t size;
grub_ieee1275_cell_t actual;
}
args;
INIT_IEEE1275_COMMON (&args.common, "setprop", 4, 1);
args.size = (grub_ieee1275_cell_t) size;
args.buf = (grub_ieee1275_cell_t) buf;
args.propname = (grub_ieee1275_cell_t) propname;
args.phandle = (grub_ieee1275_cell_t) phandle;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*actual = args.actual;
if ((args.actual == IEEE1275_CELL_INVALID) || (args.actual != args.size))
return -1;
return 0;
}
int
grub_ieee1275_set_color (grub_ieee1275_ihandle_t ihandle,
int index, int r, int g, int b)
{
struct set_color_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t method;
grub_ieee1275_cell_t ihandle;
grub_ieee1275_cell_t index;
grub_ieee1275_cell_t b;
grub_ieee1275_cell_t g;
grub_ieee1275_cell_t r;
grub_ieee1275_cell_t catch_result;
}
args;
INIT_IEEE1275_COMMON (&args.common, "call-method", 6, 1);
args.method = (grub_ieee1275_cell_t) "color!";
args.ihandle = ihandle;
args.index = index;
args.r = r;
args.g = g;
args.b = b;
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
return args.catch_result;
}
int
grub_ieee1275_milliseconds (grub_uint32_t *msecs)
{
struct milliseconds_args
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t msecs;
}
args;
INIT_IEEE1275_COMMON (&args.common, "milliseconds", 0, 1);
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
*msecs = args.msecs;
return 0;
}
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