diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/arch/powerpc/lib/ide.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/arch/powerpc/lib/ide.c')
-rw-r--r-- | qemu/roms/u-boot/arch/powerpc/lib/ide.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/powerpc/lib/ide.c b/qemu/roms/u-boot/arch/powerpc/lib/ide.c new file mode 100644 index 000000000..b4ead726a --- /dev/null +++ b/qemu/roms/u-boot/arch/powerpc/lib/ide.c @@ -0,0 +1,184 @@ +/* + * (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 |