mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-04 14:00:19 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
185 lines
5.0 KiB
C
185 lines
5.0 KiB
C
/*
|
|
* (C) Copyright 2000-2011
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
/* Code taken from cmd_ide.c */
|
|
#include <common.h>
|
|
#include <ata.h>
|
|
#include "ide.h"
|
|
|
|
#ifdef CONFIG_IDE_8xx_DIRECT
|
|
#include <mpc8xx.h>
|
|
#include <pcmcia.h>
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/* Timings for IDE Interface
|
|
*
|
|
* SETUP / LENGTH / HOLD - cycles valid for 50 MHz clk
|
|
* 70 165 30 PIO-Mode 0, [ns]
|
|
* 4 9 2 [Cycles]
|
|
* 50 125 20 PIO-Mode 1, [ns]
|
|
* 3 7 2 [Cycles]
|
|
* 30 100 15 PIO-Mode 2, [ns]
|
|
* 2 6 1 [Cycles]
|
|
* 30 80 10 PIO-Mode 3, [ns]
|
|
* 2 5 1 [Cycles]
|
|
* 25 70 10 PIO-Mode 4, [ns]
|
|
* 2 4 1 [Cycles]
|
|
*/
|
|
|
|
static const pio_config_t pio_config_ns[IDE_MAX_PIO_MODE+1] = {
|
|
/* Setup Length Hold */
|
|
{ 70, 165, 30 }, /* PIO-Mode 0, [ns] */
|
|
{ 50, 125, 20 }, /* PIO-Mode 1, [ns] */
|
|
{ 30, 101, 15 }, /* PIO-Mode 2, [ns] */
|
|
{ 30, 80, 10 }, /* PIO-Mode 3, [ns] */
|
|
{ 25, 70, 10 }, /* PIO-Mode 4, [ns] */
|
|
};
|
|
|
|
static pio_config_t pio_config_clk[IDE_MAX_PIO_MODE+1];
|
|
|
|
#ifndef CONFIG_SYS_PIO_MODE
|
|
#define CONFIG_SYS_PIO_MODE 0 /* use a relaxed default */
|
|
#endif
|
|
static int pio_mode = CONFIG_SYS_PIO_MODE;
|
|
|
|
/* Make clock cycles and always round up */
|
|
|
|
#define PCMCIA_MK_CLKS(t, T) (((t) * (T) + 999U) / 1000U)
|
|
|
|
static void set_pcmcia_timing(int pmode)
|
|
{
|
|
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
|
|
volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);
|
|
ulong timings;
|
|
|
|
debug("Set timing for PIO Mode %d\n", pmode);
|
|
|
|
timings = PCMCIA_SHT(pio_config_clk[pmode].t_hold)
|
|
| PCMCIA_SST(pio_config_clk[pmode].t_setup)
|
|
| PCMCIA_SL(pio_config_clk[pmode].t_length);
|
|
|
|
/*
|
|
* IDE 0
|
|
*/
|
|
pcmp->pcmc_pbr0 = CONFIG_SYS_PCMCIA_PBR0;
|
|
#if (CONFIG_SYS_PCMCIA_POR0 != 0)
|
|
pcmp->pcmc_por0 = CONFIG_SYS_PCMCIA_POR0 | timings;
|
|
#else
|
|
pcmp->pcmc_por0 = CONFIG_SYS_PCMCIA_POR0;
|
|
#endif
|
|
debug("PBR0: %08x POR0: %08x\n", pcmp->pcmc_pbr0, pcmp->pcmc_por0);
|
|
|
|
pcmp->pcmc_pbr1 = CONFIG_SYS_PCMCIA_PBR1;
|
|
#if (CONFIG_SYS_PCMCIA_POR1 != 0)
|
|
pcmp->pcmc_por1 = CONFIG_SYS_PCMCIA_POR1 | timings;
|
|
#else
|
|
pcmp->pcmc_por1 = CONFIG_SYS_PCMCIA_POR1;
|
|
#endif
|
|
debug("PBR1: %08x POR1: %08x\n", pcmp->pcmc_pbr1, pcmp->pcmc_por1);
|
|
|
|
pcmp->pcmc_pbr2 = CONFIG_SYS_PCMCIA_PBR2;
|
|
#if (CONFIG_SYS_PCMCIA_POR2 != 0)
|
|
pcmp->pcmc_por2 = CONFIG_SYS_PCMCIA_POR2 | timings;
|
|
#else
|
|
pcmp->pcmc_por2 = CONFIG_SYS_PCMCIA_POR2;
|
|
#endif
|
|
debug("PBR2: %08x POR2: %08x\n", pcmp->pcmc_pbr2, pcmp->pcmc_por2);
|
|
|
|
pcmp->pcmc_pbr3 = CONFIG_SYS_PCMCIA_PBR3;
|
|
#if (CONFIG_SYS_PCMCIA_POR3 != 0)
|
|
pcmp->pcmc_por3 = CONFIG_SYS_PCMCIA_POR3 | timings;
|
|
#else
|
|
pcmp->pcmc_por3 = CONFIG_SYS_PCMCIA_POR3;
|
|
#endif
|
|
debug("PBR3: %08x POR3: %08x\n", pcmp->pcmc_pbr3, pcmp->pcmc_por3);
|
|
|
|
/*
|
|
* IDE 1
|
|
*/
|
|
pcmp->pcmc_pbr4 = CONFIG_SYS_PCMCIA_PBR4;
|
|
#if (CONFIG_SYS_PCMCIA_POR4 != 0)
|
|
pcmp->pcmc_por4 = CONFIG_SYS_PCMCIA_POR4 | timings;
|
|
#else
|
|
pcmp->pcmc_por4 = CONFIG_SYS_PCMCIA_POR4;
|
|
#endif
|
|
debug("PBR4: %08x POR4: %08x\n", pcmp->pcmc_pbr4, pcmp->pcmc_por4);
|
|
|
|
pcmp->pcmc_pbr5 = CONFIG_SYS_PCMCIA_PBR5;
|
|
#if (CONFIG_SYS_PCMCIA_POR5 != 0)
|
|
pcmp->pcmc_por5 = CONFIG_SYS_PCMCIA_POR5 | timings;
|
|
#else
|
|
pcmp->pcmc_por5 = CONFIG_SYS_PCMCIA_POR5;
|
|
#endif
|
|
debug("PBR5: %08x POR5: %08x\n", pcmp->pcmc_pbr5, pcmp->pcmc_por5);
|
|
|
|
pcmp->pcmc_pbr6 = CONFIG_SYS_PCMCIA_PBR6;
|
|
#if (CONFIG_SYS_PCMCIA_POR6 != 0)
|
|
pcmp->pcmc_por6 = CONFIG_SYS_PCMCIA_POR6 | timings;
|
|
#else
|
|
pcmp->pcmc_por6 = CONFIG_SYS_PCMCIA_POR6;
|
|
#endif
|
|
debug("PBR6: %08x POR6: %08x\n", pcmp->pcmc_pbr6, pcmp->pcmc_por6);
|
|
|
|
pcmp->pcmc_pbr7 = CONFIG_SYS_PCMCIA_PBR7;
|
|
#if (CONFIG_SYS_PCMCIA_POR7 != 0)
|
|
pcmp->pcmc_por7 = CONFIG_SYS_PCMCIA_POR7 | timings;
|
|
#else
|
|
pcmp->pcmc_por7 = CONFIG_SYS_PCMCIA_POR7;
|
|
#endif
|
|
debug("PBR7: %08x POR7: %08x\n", pcmp->pcmc_pbr7, pcmp->pcmc_por7);
|
|
|
|
}
|
|
|
|
int ide_preinit(void)
|
|
{
|
|
int i;
|
|
/* Initialize PIO timing tables */
|
|
for (i = 0; i <= IDE_MAX_PIO_MODE; ++i) {
|
|
pio_config_clk[i].t_setup =
|
|
PCMCIA_MK_CLKS(pio_config_ns[i].t_setup, gd->bus_clk);
|
|
pio_config_clk[i].t_length =
|
|
PCMCIA_MK_CLKS(pio_config_ns[i].t_length, gd->bus_clk);
|
|
pio_config_clk[i].t_hold =
|
|
PCMCIA_MK_CLKS(pio_config_ns[i].t_hold, gd->bus_clk);
|
|
debug("PIO Mode %d: setup=%2d ns/%d clk" " len=%3d ns/%d clk"
|
|
" hold=%2d ns/%d clk\n", i, pio_config_ns[i].t_setup,
|
|
pio_config_clk[i].t_setup, pio_config_ns[i].t_length,
|
|
pio_config_clk[i].t_length, pio_config_ns[i].t_hold,
|
|
pio_config_clk[i].t_hold);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ide_init_postreset(void)
|
|
{
|
|
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
|
|
volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);
|
|
|
|
/* PCMCIA / IDE initialization for common mem space */
|
|
pcmp->pcmc_pgcrb = 0;
|
|
|
|
/* start in PIO mode 0 - most relaxed timings */
|
|
pio_mode = 0;
|
|
set_pcmcia_timing(pio_mode);
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_IDE_8xx_DIRECT */
|
|
|
|
#ifdef CONFIG_IDE_8xx_PCCARD
|
|
int ide_preinit(void)
|
|
{
|
|
ide_devices_found = 0;
|
|
/* initialize the PCMCIA IDE adapter card */
|
|
pcmcia_on();
|
|
if (!ide_devices_found)
|
|
return 1;
|
|
udelay(1000000);/* 1 s */
|
|
return 0;
|
|
}
|
|
#endif
|