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cmd_ddr.c
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/*
* Ingenic burn command
*
* Copyright (c) 2013 cli <cli@ingenic.cn>
*
* 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
*/
#include <common.h>
#include <command.h>
#include <asm/errno.h>
#include <asm/arch/clk.h>
struct ddr_timing1 {
unsigned int tWL:6;
unsigned int Reserved:2;
unsigned int tWR:6;
unsigned int Reserved1:2;
unsigned int tWTR:6;
unsigned int Reserved2:2;
unsigned int tRTP:6;
unsigned int Reserved3:2;
};
struct ddr_timing2 {
unsigned int tRL:6;
unsigned int Reserved:2;
unsigned int tRCD:6;
unsigned int Reserved1:2;
unsigned int tRAS:6;
unsigned int Reserved2:2;
unsigned int tCCD:6;
unsigned int Reserved3:2;
};
struct ddr_timing3 {
unsigned int tRC:6;
unsigned int Reserved:2;
unsigned int tRRD:6;
unsigned int Reserved1:2;
unsigned int tRP:6;
unsigned int Reserved2:2;
unsigned int tCKSRE:3;
unsigned int tONUM:3;
unsigned int Reserved3:2;
};
struct ddr_timing4 {
unsigned int tMRD:2;
unsigned int Reserved:2;
unsigned int tXP:3;
unsigned int Reserved1:1;
unsigned int tMINSR:4;
unsigned int Reserved2:4;
unsigned int tCKE:3;
unsigned int tRWCOV:2;
unsigned int tEXTRW:3;
unsigned int tRFC:6;
unsigned int Reserved3:2;
};
struct ddr_timing5 {
unsigned int tWDLAT:6;
unsigned int Reserved:2;
unsigned int tRDLAT:6;
unsigned int Reserved1:2;
unsigned int tRTW:6;
unsigned int Reserved2:2;
unsigned int tCTLUPD:8;
};
struct ddr_timing6 {
unsigned int tCFGR:6;
unsigned int Reserved:2;
unsigned int tCFGW:6;
unsigned int Reserved1:2;
unsigned int tFAW:6;
unsigned int Reserved2:2;
unsigned int tXSRD:8;
};
struct ddr_parameters {
struct ddr_timing1 *timing1;
struct ddr_timing2 *timing2;
struct ddr_timing3 *timing3;
struct ddr_timing4 *timing4;
struct ddr_timing5 *timing5;
struct ddr_timing6 *timing6;
};
static unsigned long long clk2ps(unsigned int clk)
{
unsigned long long ddr_rate;
ddr_rate = (unsigned long long)clk_get_rate(DDR);
return 1000*1000*1000*1000LL / ddr_rate * clk;
}
#define ddr_timing_print(c,x) \
printf("t"#x": %d %lld(ps)\n",ddr_p->timing##c->t##x, clk2ps(ddr_p->timing##c->t##x))
static int print_ddr_param(struct ddr_parameters *ddr_p)
{
printf("=============================DDR_PARAMS START=======================\n");
printf("timing 1\n");
ddr_timing_print(1, WL);
ddr_timing_print(1, WR);
ddr_timing_print(1, WTR);
ddr_timing_print(1, RTP);
printf("timing 2\n");
ddr_timing_print(2, RL);
ddr_timing_print(2, RCD);
ddr_timing_print(2, RAS);
ddr_timing_print(2, CCD);
printf("timing 3\n");
ddr_timing_print(3, RC);
ddr_timing_print(3, RRD);
ddr_timing_print(3, RP);
ddr_timing_print(3, CKSRE);
ddr_timing_print(3, ONUM);
printf("timing 4\n");
ddr_timing_print(4, MRD);
ddr_timing_print(4, XP);
ddr_timing_print(4, MINSR);
ddr_timing_print(4, CKE);
ddr_timing_print(4, RWCOV);
ddr_timing_print(4, EXTRW);
ddr_timing_print(4, RFC);
printf("timing 5\n");
ddr_timing_print(5, WDLAT);
ddr_timing_print(5, RDLAT);
ddr_timing_print(5, RTW);
ddr_timing_print(5, CTLUPD);
printf("timing 6\n");
ddr_timing_print(6, CFGR);
ddr_timing_print(6, CFGW);
ddr_timing_print(6, FAW);
ddr_timing_print(6, XSRD);
printf("=============================DDR_PARAMS END =======================\n");
}
int ddr_param_debug(void)
{
struct ddr_parameters ddr_param;
ddr_param.timing1 = (struct ddr_timing1 *)(0xb34f0060);
ddr_param.timing2 = (struct ddr_timing2 *)(0xb34f0064);
ddr_param.timing3 = (struct ddr_timing3 *)(0xb34f0068);
ddr_param.timing4 = (struct ddr_timing4 *)(0xb34f006C);
ddr_param.timing5 = (struct ddr_timing5 *)(0xb34f0070);
ddr_param.timing6 = (struct ddr_timing6 *)(0xb34f0074);
print_ddr_param(&ddr_param);
return 0;
}
static int do_ddr_param_read(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
const char *str_env;
struct ddr_parameters ddr_param;
printf("%s %d %d\n",__FILE__,__LINE__,argc);
if (argc > 1)
return CMD_RET_USAGE;
ddr_param.timing1 = (struct ddr_timing1 *)(0xb34f0060);
ddr_param.timing2 = (struct ddr_timing2 *)(0xb34f0064);
ddr_param.timing3 = (struct ddr_timing3 *)(0xb34f0068);
ddr_param.timing4 = (struct ddr_timing4 *)(0xb34f006C);
ddr_param.timing5 = (struct ddr_timing5 *)(0xb34f0070);
ddr_param.timing6 = (struct ddr_timing6 *)(0xb34f0074);
print_ddr_param(&ddr_param);
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(ddr_param_read, 1, 1, do_ddr_param_read,
"Ingenic ddr paramaters read",
"no param\n"
);