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powerpc/mpc8xxxx: FSL DDR debugger auto run of stored commands

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This patch adds the ability for the FSL DDR interactive debugger to
automatically run the sequence of commands stored in the ddr_interactive
environment variable.  Commands are separated using ';'.

ddr_interactive=compute; edit c0 d0 dimmparms caslat_X 0x3FC0; go

Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
James Yang 2013-01-07 14:01:03 +00:00 committed by Andy Fleming
parent 02a9ce7187
commit e8ba6c503f
3 changed files with 47 additions and 11 deletions
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3
arch/powerpc/cpu/mpc8xxx/ddr/ddr.h
View file

@ -86,7 +86,8 @@ void fsl_ddr_set_lawbar(
unsigned int memctl_interleaved,
unsigned int ctrl_num);
unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo);
int fsl_ddr_interactive_env_var_exists(void);
unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo, int var_is_set);
void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
unsigned int ctrl_num);

47
arch/powerpc/cpu/mpc8xxx/ddr/interactive.c
View file

@ -1430,11 +1430,23 @@ static unsigned int fsl_ddr_parse_interactive_cmd(
return error;
}
unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo)
int fsl_ddr_interactive_env_var_exists(void)
{
char buffer[CONFIG_SYS_CBSIZE];
if (getenv_f("ddr_interactive", buffer, CONFIG_SYS_CBSIZE) >= 0)
return 1;
return 0;
}
unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo, int var_is_set)
{
unsigned long long ddrsize;
const char *prompt = "FSL DDR>";
char buffer[CONFIG_SYS_CBSIZE];
char buffer2[CONFIG_SYS_CBSIZE];
char *p = NULL;
char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */
int argc;
unsigned int next_step = STEP_GET_SPD;
@ -1451,16 +1463,39 @@ unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo)
"go program the memory controller and continue with u-boot\n"
};
if (var_is_set) {
if (getenv_f("ddr_interactive", buffer2, CONFIG_SYS_CBSIZE) > 0) {
p = buffer2;
} else {
var_is_set = 0;
}
}
/*
* The strategy for next_step is that it points to the next
* step in the computation process that needs to be done.
*/
while (1) {
/*
* No need to worry for buffer overflow here in
* this function; readline() maxes out at CFG_CBSIZE
*/
readline_into_buffer(prompt, buffer, 0);
if (var_is_set) {
char *pend = strchr(p, ';');
if (pend) {
/* found command separator, copy sub-command */
*pend = '\0';
strcpy(buffer, p);
p = pend + 1;
} else {
/* separator not found, copy whole string */
strcpy(buffer, p);
p = NULL;
var_is_set = 0;
}
} else {
/*
* No need to worry for buffer overflow here in
* this function; readline() maxes out at CFG_CBSIZE
*/
readline_into_buffer(prompt, buffer, 0);
}
argc = parse_line(buffer, argv);
if (argc == 0)
continue;

8
arch/powerpc/cpu/mpc8xxx/ddr/main.c
View file

@ -532,10 +532,10 @@ phys_size_t fsl_ddr_sdram(void)
/* Compute it once normally. */
#ifdef CONFIG_FSL_DDR_INTERACTIVE
if (getenv("ddr_interactive")) {
total_memory = fsl_ddr_interactive(&info);
} else if (tstc() && (getc() == 'd')) { /* we got a key press of 'd' */
total_memory = fsl_ddr_interactive(&info);
if (tstc() && (getc() == 'd')) { /* we got a key press of 'd' */
total_memory = fsl_ddr_interactive(&info, 0);
} else if (fsl_ddr_interactive_env_var_exists()) {
total_memory = fsl_ddr_interactive(&info, 1);
} else
#endif
total_memory = fsl_ddr_compute(&info, STEP_GET_SPD, 0);