projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| ef509b90 VA |
1 | /* |
| 2 | * Keystone2: Asynchronous EMIF Configuration | |
| 3 | * | |
| 4 | * (C) Copyright 2012-2014 | |
| 5 | * Texas Instruments Incorporated, <www.ti.com> | |
| 6 | * | |
| 7 | * SPDX-License-Identifier: GPL-2.0+ | |
| 8 | */ | |
| 9 | ||
| 10 | #include <common.h> | |
| 909ea9aa KI |
11 | #include <asm/ti-common/ti-aemif.h> |
| 12 | ||
| 13 | #define AEMIF_WAITCYCLE_CONFIG (CONFIG_AEMIF_CNTRL_BASE + 0x4) | |
| 14 | #define AEMIF_NAND_CONTROL (CONFIG_AEMIF_CNTRL_BASE + 0x60) | |
| 15 | #define AEMIF_ONENAND_CONTROL (CONFIG_AEMIF_CNTRL_BASE + 0x5c) | |
| 16 | #define AEMIF_CONFIG(cs) (CONFIG_AEMIF_CNTRL_BASE + 0x10 \ | |
| 17 | + (cs * 4)) | |
| ef509b90 VA |
18 | |
| 19 | #define AEMIF_CFG_SELECT_STROBE(v) ((v) ? 1 << 31 : 0) | |
| 20 | #define AEMIF_CFG_EXTEND_WAIT(v) ((v) ? 1 << 30 : 0) | |
| 21 | #define AEMIF_CFG_WR_SETUP(v) (((v) & 0x0f) << 26) | |
| 22 | #define AEMIF_CFG_WR_STROBE(v) (((v) & 0x3f) << 20) | |
| 23 | #define AEMIF_CFG_WR_HOLD(v) (((v) & 0x07) << 17) | |
| 24 | #define AEMIF_CFG_RD_SETUP(v) (((v) & 0x0f) << 13) | |
| 25 | #define AEMIF_CFG_RD_STROBE(v) (((v) & 0x3f) << 7) | |
| 26 | #define AEMIF_CFG_RD_HOLD(v) (((v) & 0x07) << 4) | |
| 27 | #define AEMIF_CFG_TURN_AROUND(v) (((v) & 0x03) << 2) | |
| 28 | #define AEMIF_CFG_WIDTH(v) (((v) & 0x03) << 0) | |
| 29 | ||
| 30 | #define set_config_field(reg, field, val) \ | |
| 31 | do { \ | |
| 32 | if (val != -1) { \ | |
| 33 | reg &= ~AEMIF_CFG_##field(0xffffffff); \ | |
| 34 | reg |= AEMIF_CFG_##field(val); \ | |
| 35 | } \ | |
| 36 | } while (0) | |
| 37 | ||
| 909ea9aa | 38 | static void aemif_configure(int cs, struct aemif_config *cfg) |
| ef509b90 VA |
39 | { |
| 40 | unsigned long tmp; | |
| 41 | ||
| 909ea9aa KI |
42 | if (cfg->mode == AEMIF_MODE_NAND) { |
| 43 | tmp = __raw_readl(AEMIF_NAND_CONTROL); | |
| ef509b90 | 44 | tmp |= (1 << cs); |
| 909ea9aa | 45 | __raw_writel(tmp, AEMIF_NAND_CONTROL); |
| ef509b90 | 46 | |
| 909ea9aa KI |
47 | } else if (cfg->mode == AEMIF_MODE_ONENAND) { |
| 48 | tmp = __raw_readl(AEMIF_ONENAND_CONTROL); | |
| ef509b90 | 49 | tmp |= (1 << cs); |
| 909ea9aa | 50 | __raw_writel(tmp, AEMIF_ONENAND_CONTROL); |
| ef509b90 VA |
51 | } |
| 52 | ||
| 909ea9aa | 53 | tmp = __raw_readl(AEMIF_CONFIG(cs)); |
| ef509b90 VA |
54 | |
| 55 | set_config_field(tmp, SELECT_STROBE, cfg->select_strobe); | |
| 56 | set_config_field(tmp, EXTEND_WAIT, cfg->extend_wait); | |
| 57 | set_config_field(tmp, WR_SETUP, cfg->wr_setup); | |
| 58 | set_config_field(tmp, WR_STROBE, cfg->wr_strobe); | |
| 59 | set_config_field(tmp, WR_HOLD, cfg->wr_hold); | |
| 60 | set_config_field(tmp, RD_SETUP, cfg->rd_setup); | |
| 61 | set_config_field(tmp, RD_STROBE, cfg->rd_strobe); | |
| 62 | set_config_field(tmp, RD_HOLD, cfg->rd_hold); | |
| 63 | set_config_field(tmp, TURN_AROUND, cfg->turn_around); | |
| 64 | set_config_field(tmp, WIDTH, cfg->width); | |
| 65 | ||
| 909ea9aa | 66 | __raw_writel(tmp, AEMIF_CONFIG(cs)); |
| ef509b90 VA |
67 | } |
| 68 | ||
| 909ea9aa | 69 | void aemif_init(int num_cs, struct aemif_config *config) |
| ef509b90 VA |
70 | { |
| 71 | int cs; | |
| 72 | ||
| 909ea9aa KI |
73 | if (num_cs > AEMIF_NUM_CS) { |
| 74 | num_cs = AEMIF_NUM_CS; | |
| 75 | printf("AEMIF: csnum has to be <= 5"); | |
| 76 | } | |
| 77 | ||
| ef509b90 | 78 | for (cs = 0; cs < num_cs; cs++) |
| 909ea9aa | 79 | aemif_configure(cs, config + cs); |
| ef509b90 | 80 | } |