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miiphyutil.c
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Reform / reform-boundary-uboot
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Michal Simek authored
The most of ethernet drivers are using this mdio registration sequence. strcpy(priv->bus->name, "emac"); mdio_register(priv->bus); Where driver can be used only with one MDIO bus because only unique name should be used. Other drivers are using unique device name for MDIO registration to support multiple instances. snprintf(priv->bus->name, sizeof(bus->name), "%s", name); With DM dev->seq is used more even in logs (like random MAC address generation: printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", dev->name, dev->seq, pdata->enetaddr); ) where eth%d prefix is used. Simplify driver code to register mdio device with dev->seq number to simplify mdio registration and reduce code duplication across all drivers. With DM_SEQ_ALIAS enabled dev->seq reflects alias setting. Signed-off-by:Michal Simek <michal.simek@xilinx.com> Acked-by:
Joe Hershberger <joe.hershberger@ni.com> Reviewed-by:
Simon Glass <sjg@chromium.org>
Michal Simek authoredThe most of ethernet drivers are using this mdio registration sequence. strcpy(priv->bus->name, "emac"); mdio_register(priv->bus); Where driver can be used only with one MDIO bus because only unique name should be used. Other drivers are using unique device name for MDIO registration to support multiple instances. snprintf(priv->bus->name, sizeof(bus->name), "%s", name); With DM dev->seq is used more even in logs (like random MAC address generation: printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", dev->name, dev->seq, pdata->enetaddr); ) where eth%d prefix is used. Simplify driver code to register mdio device with dev->seq number to simplify mdio registration and reduce code duplication across all drivers. With DM_SEQ_ALIAS enabled dev->seq reflects alias setting. Signed-off-by:
env_nand.c 7.66 KiB
/*
* (C) Copyright 2004
* Jian Zhang, Texas Instruments, jzhang@ti.com.
* (C) Copyright 2000-2006
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Andreas Heppel <aheppel@sysgo.de>
* See file CREDITS for list of people who contributed to this
* project.
*
* This program 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 2 of
* the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/* #define DEBUG */
#include <common.h>
#if defined(CFG_ENV_IS_IN_NAND) /* Environment is in Nand Flash */
#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
#include <malloc.h>
#include <nand.h>
#if defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)
#define CMD_SAVEENV
#elif defined(CFG_ENV_OFFSET_REDUND)
#error Cannot use CFG_ENV_OFFSET_REDUND without CONFIG_CMD_ENV & CONFIG_CMD_NAND
#endif
#if defined(CFG_ENV_SIZE_REDUND) && (CFG_ENV_SIZE_REDUND != CFG_ENV_SIZE)
#error CFG_ENV_SIZE_REDUND should be the same as CFG_ENV_SIZE
#endif
#ifdef CONFIG_INFERNO
#error CONFIG_INFERNO not supported yet
#endif
int nand_legacy_rw (struct nand_chip* nand, int cmd,
size_t start, size_t len,
size_t * retlen, u_char * buf);
/* info for NAND chips, defined in drivers/mtd/nand/nand.c */
extern nand_info_t nand_info[];
/* references to names in env_common.c */
extern uchar default_environment[];
extern int default_environment_size;
char * env_name_spec = "NAND";
#ifdef ENV_IS_EMBEDDEDextern uchar environment[];
env_t *env_ptr = (env_t *)(&environment[0]);
#else /* ! ENV_IS_EMBEDDED */
env_t *env_ptr = 0;
#endif /* ENV_IS_EMBEDDED */
/* local functions */
#if !defined(ENV_IS_EMBEDDED)
static void use_default(void);
#endif
DECLARE_GLOBAL_DATA_PTR;
uchar env_get_char_spec (int index)
{
return ( *((uchar *)(gd->env_addr + index)) );
}
/* this is called before nand_init()
* so we can't read Nand to validate env data.
* Mark it OK for now. env_relocate() in env_common.c
* will call our relocate function which will does
* the real validation.
*
* When using a NAND boot image (like sequoia_nand), the environment
* can be embedded or attached to the U-Boot image in NAND flash. This way
* the SPL loads not only the U-Boot image from NAND but also the
* environment.
*/
int env_init(void)
{
#if defined(ENV_IS_EMBEDDED)
ulong total;
int crc1_ok = 0, crc2_ok = 0;
env_t *tmp_env1, *tmp_env2;
total = CFG_ENV_SIZE;
tmp_env1 = env_ptr;
tmp_env2 = (env_t *)((ulong)env_ptr + CFG_ENV_SIZE);
crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
if (!crc1_ok && !crc2_ok)
gd->env_valid = 0;
else if(crc1_ok && !crc2_ok)
gd->env_valid = 1;
else if(!crc1_ok && crc2_ok)
gd->env_valid = 2;
else {
/* both ok - check serial */
if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
gd->env_valid = 2;
else if(tmp_env2->flags == 255 && tmp_env1->flags == 0)
gd->env_valid = 1;
else if(tmp_env1->flags > tmp_env2->flags)
gd->env_valid = 1;
else if(tmp_env2->flags > tmp_env1->flags)
gd->env_valid = 2;
else /* flags are equal - almost impossible */
gd->env_valid = 1;
}
if (gd->env_valid == 1)
env_ptr = tmp_env1;
else if (gd->env_valid == 2)
env_ptr = tmp_env2;#else /* ENV_IS_EMBEDDED */
gd->env_addr = (ulong)&default_environment[0];
gd->env_valid = 1;
#endif /* ENV_IS_EMBEDDED */
return (0);
}
#ifdef CMD_SAVEENV
/*
* The legacy NAND code saved the environment in the first NAND device i.e.,
* nand_dev_desc + 0. This is also the behaviour using the new NAND code.
*/
#ifdef CFG_ENV_OFFSET_REDUND
int saveenv(void)
{
size_t total;
int ret = 0;
env_ptr->flags++;
total = CFG_ENV_SIZE;
if(gd->env_valid == 1) {
puts ("Erasing redundant Nand...");
if (nand_erase(&nand_info[0],
CFG_ENV_OFFSET_REDUND, CFG_ENV_SIZE))
return 1;
puts ("Writing to redundant Nand... ");
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
(u_char*) env_ptr);
} else {
puts ("Erasing Nand...");
if (nand_erase(&nand_info[0],
CFG_ENV_OFFSET, CFG_ENV_SIZE))
return 1;
puts ("Writing to Nand... ");
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total,
(u_char*) env_ptr);
}
if (ret || total != CFG_ENV_SIZE)
return 1;
puts ("done\n");
gd->env_valid = (gd->env_valid == 2 ? 1 : 2);
return ret;
}
#else /* ! CFG_ENV_OFFSET_REDUND */
int saveenv(void)
{
ulong total;
int ret = 0;
puts ("Erasing Nand...");
if (nand_erase(&nand_info[0], CFG_ENV_OFFSET, CFG_ENV_SIZE))
return 1;
puts ("Writing to Nand... ");
total = CFG_ENV_SIZE;
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char*)env_ptr);
if (ret || total != CFG_ENV_SIZE)
return 1;
puts ("done\n");
return ret;
}
#endif /* CFG_ENV_OFFSET_REDUND */
#endif /* CMD_SAVEENV */
#ifdef CFG_ENV_OFFSET_REDUNDvoid env_relocate_spec (void)
{
#if !defined(ENV_IS_EMBEDDED)
size_t total;
int crc1_ok = 0, crc2_ok = 0;
env_t *tmp_env1, *tmp_env2;
total = CFG_ENV_SIZE;
tmp_env1 = (env_t *) malloc(CFG_ENV_SIZE);
tmp_env2 = (env_t *) malloc(CFG_ENV_SIZE);
nand_read(&nand_info[0], CFG_ENV_OFFSET, &total,
(u_char*) tmp_env1);
nand_read(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
(u_char*) tmp_env2);
crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
if(!crc1_ok && !crc2_ok)
return use_default();
else if(crc1_ok && !crc2_ok)
gd->env_valid = 1;
else if(!crc1_ok && crc2_ok)
gd->env_valid = 2;
else {
/* both ok - check serial */
if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
gd->env_valid = 2;
else if(tmp_env2->flags == 255 && tmp_env1->flags == 0)
gd->env_valid = 1;
else if(tmp_env1->flags > tmp_env2->flags)
gd->env_valid = 1;
else if(tmp_env2->flags > tmp_env1->flags)
gd->env_valid = 2;
else /* flags are equal - almost impossible */
gd->env_valid = 1;
}
free(env_ptr);
if(gd->env_valid == 1) {
env_ptr = tmp_env1;
free(tmp_env2);
} else {
env_ptr = tmp_env2;
free(tmp_env1);
}
#endif /* ! ENV_IS_EMBEDDED */
}
#else /* ! CFG_ENV_OFFSET_REDUND */
/*
* The legacy NAND code saved the environment in the first NAND device i.e.,
* nand_dev_desc + 0. This is also the behaviour using the new NAND code.
*/
void env_relocate_spec (void)
{
#if !defined(ENV_IS_EMBEDDED)
ulong total;
int ret;
total = CFG_ENV_SIZE;
ret = nand_read(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char*)env_ptr);
if (ret || total != CFG_ENV_SIZE)
return use_default();
if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc)
return use_default();#endif /* ! ENV_IS_EMBEDDED */
}
#endif /* CFG_ENV_OFFSET_REDUND */
#if !defined(ENV_IS_EMBEDDED)
static void use_default()
{
puts ("*** Warning - bad CRC or NAND, using default environment\n\n");
if (default_environment_size > CFG_ENV_SIZE){
puts ("*** Error - default environment is too large\n\n");
return;
}
memset (env_ptr, 0, sizeof(env_t));
memcpy (env_ptr->data,
default_environment,
default_environment_size);
env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE);
gd->env_valid = 1;
}
#endif
#endif /* CFG_ENV_IS_IN_NAND */