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