--- /dev/null
+/*
+ * (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
Code Review / kvmfornfv.git / blobdiff