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env: nvram: Drop CONFIG_SYS_NVRAM_ACCESS_ROUTINE

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This option is unused anywhere and likely untested for quite a long
while. Drop this support code.

Signed-off-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Tom Rini 2022-12-02 16:42:23 -05:00
parent 5388aa2851
commit ade03b55c4
1 changed files with 2 additions and 40 deletions
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42
env/nvram.c vendored
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@ -7,22 +7,6 @@
* Andreas Heppel <aheppel@sysgo.de>
*/
/*
* 09-18-2001 Andreas Heppel, Sysgo RTS GmbH <aheppel@sysgo.de>
*
* It might not be possible in all cases to use 'memcpy()' to copy
* the environment to NVRAM, as the NVRAM might not be mapped into
* the memory space. (I.e. this is the case for the BAB750). In those
* cases it might be possible to access the NVRAM using a different
* method. For example, the RTC on the BAB750 is accessible in IO
* space using its address and data registers. To enable usage of
* NVRAM in those cases I invented the functions 'nvram_read()' and
* 'nvram_write()', which will be activated upon the configuration
* #define CONFIG_SYS_NVRAM_ACCESS_ROUTINE. Note, that those functions are
* strongly dependent on the used HW, and must be redefined for each
* board that wants to use them.
*/
#include <common.h>
#include <command.h>
#include <env.h>
@ -35,22 +19,14 @@
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_SYS_NVRAM_ACCESS_ROUTINE
extern void *nvram_read(void *dest, const long src, size_t count);
extern void nvram_write(long dest, const void *src, size_t count);
#else
static env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
#endif
static int env_nvram_load(void)
{
char buf[CONFIG_ENV_SIZE];
#if defined(CONFIG_SYS_NVRAM_ACCESS_ROUTINE)
nvram_read(buf, CONFIG_ENV_ADDR, CONFIG_ENV_SIZE);
#else
memcpy(buf, (void *)CONFIG_ENV_ADDR, CONFIG_ENV_SIZE);
#endif
return env_import(buf, 1, H_EXTERNAL);
}
@ -63,12 +39,9 @@ static int env_nvram_save(void)
if (rcode)
return rcode;
#ifdef CONFIG_SYS_NVRAM_ACCESS_ROUTINE
nvram_write(CONFIG_ENV_ADDR, &env_new, CONFIG_ENV_SIZE);
#else
if (memcpy((char *)CONFIG_ENV_ADDR, &env_new, CONFIG_ENV_SIZE) == NULL)
rcode = 1;
#endif
return rcode;
}
@ -79,19 +52,8 @@ static int env_nvram_save(void)
*/
static int env_nvram_init(void)
{
#if defined(CONFIG_SYS_NVRAM_ACCESS_ROUTINE)
ulong crc;
uchar data[ENV_SIZE];
nvram_read(&crc, CONFIG_ENV_ADDR, sizeof(ulong));
nvram_read(data, CONFIG_ENV_ADDR + sizeof(ulong), ENV_SIZE);
if (crc32(0, data, ENV_SIZE) == crc) {
gd->env_addr = (ulong)CONFIG_ENV_ADDR + sizeof(long);
#else
if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
gd->env_addr = (ulong)&env_ptr->data;
#endif
gd->env_valid = ENV_VALID;
} else {
gd->env_valid = ENV_INVALID;