freebsd-dev/stand/uboot/glue.c
Warner Losh 9dc70af83e stand/uboot: reorg
Build uboot ubldr and friends like we build efi binaries
o move everything to be under stand/uboot
o md code goes in arch/$ARCH
o move everything over from the library
  - Had to rename console.c, disk.c and module.c due to conflicts
o update version to 1.5 to reflect the new way of building

This results in a more consistent build system and should represent no
functional change, apart from powerpc version getting new help
file. Also, moved to exlcuding uboot on powerpc64le by using
BROKEN_OPTION instead of the incidental exclusion we had before due to
Makefile reorgs.

Sponsored by:		Netflix
Feedback by:		stevek, jrtc27
Differential Revision:	https://reviews.freebsd.org/D33362
2021-12-14 21:09:53 -07:00

567 lines
10 KiB
C

/*-
* Copyright (c) 2007-2008 Semihalf, Rafal Jaworowski <raj@semihalf.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <zlib.h>
#include <stand.h>
#include "api_public.h"
#include "glue.h"
#ifdef DEBUG
#define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt,##args); } while (0)
#else
#define debugf(fmt, args...)
#endif
/* Some random address used by U-Boot. */
extern long uboot_address;
static int
valid_sig(struct api_signature *sig)
{
uint32_t checksum;
struct api_signature s;
if (sig == NULL)
return (0);
/*
* Clear the checksum field (in the local copy) so as to calculate the
* CRC with the same initial contents as at the time when the sig was
* produced
*/
s = *sig;
s.checksum = crc32(0, Z_NULL, 0);
checksum = crc32(s.checksum, (void *)&s, sizeof(struct api_signature));
if (checksum != sig->checksum)
return (0);
return (1);
}
/*
* Checks to see if API signature's address was given to us as a command line
* argument by U-Boot.
*
* returns 1/0 depending on found/not found result
*/
int
api_parse_cmdline_sig(int argc, char **argv, struct api_signature **sig)
{
unsigned long api_address;
int c;
api_address = 0;
opterr = 0;
optreset = 1;
optind = 1;
while ((c = getopt (argc, argv, "a:")) != -1)
switch (c) {
case 'a':
api_address = strtoul(optarg, NULL, 16);
break;
default:
break;
}
if (api_address != 0) {
*sig = (struct api_signature *)api_address;
if (valid_sig(*sig))
return (1);
}
return (0);
}
/*
* Searches for the U-Boot API signature
*
* returns 1/0 depending on found/not found result
*/
int
api_search_sig(struct api_signature **sig)
{
unsigned char *sp, *spend;
if (sig == NULL)
return (0);
if (uboot_address == 0)
uboot_address = 255 * 1024 * 1024;
sp = (void *)(uboot_address & API_SIG_SEARCH_MASK);
spend = sp + API_SIG_SEARCH_LEN - API_SIG_MAGLEN;
while (sp < spend) {
if (!bcmp(sp, API_SIG_MAGIC, API_SIG_MAGLEN)) {
*sig = (struct api_signature *)sp;
if (valid_sig(*sig))
return (1);
}
sp += API_SIG_MAGLEN;
}
*sig = NULL;
return (0);
}
/****************************************
*
* console
*
****************************************/
int
ub_getc(void)
{
int c;
if (!syscall(API_GETC, NULL, &c))
return (-1);
return (c);
}
int
ub_tstc(void)
{
int t;
if (!syscall(API_TSTC, NULL, &t))
return (-1);
return (t);
}
void
ub_putc(const char c)
{
syscall(API_PUTC, NULL, &c);
}
void
ub_puts(const char *s)
{
syscall(API_PUTS, NULL, s);
}
/****************************************
*
* system
*
****************************************/
void
ub_reset(void)
{
syscall(API_RESET, NULL);
while (1); /* fallback if API_RESET failed */
__unreachable();
}
static struct mem_region mr[UB_MAX_MR];
static struct sys_info si;
struct sys_info *
ub_get_sys_info(void)
{
int err = 0;
memset(&si, 0, sizeof(struct sys_info));
si.mr = mr;
si.mr_no = UB_MAX_MR;
memset(&mr, 0, sizeof(mr));
if (!syscall(API_GET_SYS_INFO, &err, &si))
return (NULL);
return ((err) ? NULL : &si);
}
/****************************************
*
* timing
*
****************************************/
void
ub_udelay(unsigned long usec)
{
syscall(API_UDELAY, NULL, &usec);
}
unsigned long
ub_get_timer(unsigned long base)
{
unsigned long cur;
if (!syscall(API_GET_TIMER, NULL, &cur, &base))
return (0);
return (cur);
}
/****************************************************************************
*
* devices
*
* Devices are identified by handles: numbers 0, 1, 2, ..., UB_MAX_DEV-1
*
***************************************************************************/
static struct device_info devices[UB_MAX_DEV];
struct device_info *
ub_dev_get(int i)
{
return ((i < 0 || i >= UB_MAX_DEV) ? NULL : &devices[i]);
}
/*
* Enumerates the devices: fills out device_info elements in the devices[]
* array.
*
* returns: number of devices found
*/
int
ub_dev_enum(void)
{
struct device_info *di;
int n = 0;
memset(&devices, 0, sizeof(struct device_info) * UB_MAX_DEV);
di = &devices[0];
if (!syscall(API_DEV_ENUM, NULL, di))
return (0);
while (di->cookie != NULL) {
if (++n >= UB_MAX_DEV)
break;
/* take another device_info */
di++;
/* pass on the previous cookie */
di->cookie = devices[n - 1].cookie;
if (!syscall(API_DEV_ENUM, NULL, di))
return (0);
}
return (n);
}
/*
* handle: 0-based id of the device
*
* returns: 0 when OK, err otherwise
*/
int
ub_dev_open(int handle)
{
struct device_info *di;
int err = 0;
if (handle < 0 || handle >= UB_MAX_DEV)
return (API_EINVAL);
di = &devices[handle];
if (!syscall(API_DEV_OPEN, &err, di))
return (-1);
return (err);
}
int
ub_dev_close(int handle)
{
struct device_info *di;
if (handle < 0 || handle >= UB_MAX_DEV)
return (API_EINVAL);
di = &devices[handle];
if (!syscall(API_DEV_CLOSE, NULL, di))
return (-1);
return (0);
}
/*
* Validates device for read/write, it has to:
*
* - have sane handle
* - be opened
*
* returns: 0/1 accordingly
*/
static int
dev_valid(int handle)
{
if (handle < 0 || handle >= UB_MAX_DEV)
return (0);
if (devices[handle].state != DEV_STA_OPEN)
return (0);
return (1);
}
static int
dev_stor_valid(int handle)
{
if (!dev_valid(handle))
return (0);
if (!(devices[handle].type & DEV_TYP_STOR))
return (0);
return (1);
}
int
ub_dev_read(int handle, void *buf, lbasize_t len, lbastart_t start,
lbasize_t *rlen)
{
struct device_info *di;
lbasize_t act_len;
int err = 0;
if (!dev_stor_valid(handle))
return (API_ENODEV);
di = &devices[handle];
if (!syscall(API_DEV_READ, &err, di, buf, &len, &start, &act_len))
return (API_ESYSC);
if (!err && rlen)
*rlen = act_len;
return (err);
}
static int
dev_net_valid(int handle)
{
if (!dev_valid(handle))
return (0);
if (devices[handle].type != DEV_TYP_NET)
return (0);
return (1);
}
int
ub_dev_recv(int handle, void *buf, int len, int *rlen)
{
struct device_info *di;
int err = 0, act_len;
if (!dev_net_valid(handle))
return (API_ENODEV);
di = &devices[handle];
if (!syscall(API_DEV_READ, &err, di, buf, &len, &act_len))
return (API_ESYSC);
if (!err)
*rlen = act_len;
return (err);
}
int
ub_dev_send(int handle, void *buf, int len)
{
struct device_info *di;
int err = 0;
if (!dev_net_valid(handle))
return (API_ENODEV);
di = &devices[handle];
if (!syscall(API_DEV_WRITE, &err, di, buf, &len))
return (API_ESYSC);
return (err);
}
char *
ub_stor_type(int type)
{
if (type & DT_STOR_IDE)
return ("IDE");
if (type & DT_STOR_SCSI)
return ("SCSI");
if (type & DT_STOR_USB)
return ("USB");
if (type & DT_STOR_MMC)
return ("MMC");
if (type & DT_STOR_SATA)
return ("SATA");
return ("Unknown");
}
char *
ub_mem_type(int flags)
{
switch (flags & 0x000F) {
case MR_ATTR_FLASH:
return ("FLASH");
case MR_ATTR_DRAM:
return ("DRAM");
case MR_ATTR_SRAM:
return ("SRAM");
default:
return ("Unknown");
}
}
void
ub_dump_di(int handle)
{
struct device_info *di = ub_dev_get(handle);
int i;
printf("device info (%d):\n", handle);
printf(" cookie\t= %p\n", di->cookie);
printf(" type\t\t= 0x%08x\n", di->type);
if (di->type == DEV_TYP_NET) {
printf(" hwaddr\t= ");
for (i = 0; i < 6; i++)
printf("%02x ", di->di_net.hwaddr[i]);
printf("\n");
} else if (di->type & DEV_TYP_STOR) {
printf(" type\t\t= %s\n", ub_stor_type(di->type));
printf(" blk size\t\t= %ld\n", di->di_stor.block_size);
printf(" blk count\t\t= %ld\n", di->di_stor.block_count);
}
}
void
ub_dump_si(struct sys_info *si)
{
int i;
printf("sys info:\n");
printf(" clkbus\t= %ld MHz\n", si->clk_bus / 1000 / 1000);
printf(" clkcpu\t= %ld MHz\n", si->clk_cpu / 1000 / 1000);
printf(" bar\t\t= 0x%08lx\n", si->bar);
printf("---\n");
for (i = 0; i < si->mr_no; i++) {
if (si->mr[i].flags == 0)
break;
printf(" start\t= 0x%08lx\n", si->mr[i].start);
printf(" size\t= 0x%08lx\n", si->mr[i].size);
printf(" type\t= %s\n", ub_mem_type(si->mr[i].flags));
printf("---\n");
}
}
/****************************************
*
* env vars
*
****************************************/
char *
ub_env_get(const char *name)
{
char *value;
if (!syscall(API_ENV_GET, NULL, name, &value))
return (NULL);
return (value);
}
void
ub_env_set(const char *name, char *value)
{
syscall(API_ENV_SET, NULL, name, value);
}
static char env_name[256];
const char *
ub_env_enum(const char *last)
{
const char *env, *str;
int i;
/*
* It's OK to pass only the name piece as last (and not the whole
* 'name=val' string), since the API_ENUM_ENV call uses envmatch()
* internally, which handles such case
*/
env = NULL;
if (!syscall(API_ENV_ENUM, NULL, last, &env))
return (NULL);
if (env == NULL || last == env)
/* no more env. variables to enumerate */
return (NULL);
/* next enumerated env var */
memset(env_name, 0, 256);
for (i = 0, str = env; *str != '=' && *str != '\0';)
env_name[i++] = *str++;
env_name[i] = '\0';
return (env_name);
}