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Annotation of qemu/hw/lm32_hwsetup.h, revision 1.1

1.1     ! root        1: /*
        !             2:  *  LatticeMico32 hwsetup helper functions.
        !             3:  *
        !             4:  *  Copyright (c) 2010 Michael Walle <[email protected]>
        !             5:  *
        !             6:  * This library is free software; you can redistribute it and/or
        !             7:  * modify it under the terms of the GNU Lesser General Public
        !             8:  * License as published by the Free Software Foundation; either
        !             9:  * version 2 of the License, or (at your option) any later version.
        !            10:  *
        !            11:  * This library is distributed in the hope that it will be useful,
        !            12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            14:  * Lesser General Public License for more details.
        !            15:  *
        !            16:  * You should have received a copy of the GNU Lesser General Public
        !            17:  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
        !            18:  */
        !            19: 
        !            20: /*
        !            21:  * These are helper functions for creating the hardware description blob used
        !            22:  * in the Theobroma's uClinux port.
        !            23:  */
        !            24: 
        !            25: #ifndef QEMU_HW_LM32_HWSETUP_H
        !            26: #define QEMU_HW_LM32_HWSETUP_H
        !            27: 
        !            28: #include "qemu-common.h"
        !            29: #include "loader.h"
        !            30: 
        !            31: typedef struct {
        !            32:     void *data;
        !            33:     void *ptr;
        !            34: } HWSetup;
        !            35: 
        !            36: enum hwsetup_tag {
        !            37:     HWSETUP_TAG_EOL         = 0,
        !            38:     HWSETUP_TAG_CPU         = 1,
        !            39:     HWSETUP_TAG_ASRAM       = 2,
        !            40:     HWSETUP_TAG_FLASH       = 3,
        !            41:     HWSETUP_TAG_SDRAM       = 4,
        !            42:     HWSETUP_TAG_OCM         = 5,
        !            43:     HWSETUP_TAG_DDR_SDRAM   = 6,
        !            44:     HWSETUP_TAG_DDR2_SDRAM  = 7,
        !            45:     HWSETUP_TAG_TIMER       = 8,
        !            46:     HWSETUP_TAG_UART        = 9,
        !            47:     HWSETUP_TAG_GPIO        = 10,
        !            48:     HWSETUP_TAG_TRISPEEDMAC = 11,
        !            49:     HWSETUP_TAG_I2CM        = 12,
        !            50:     HWSETUP_TAG_LEDS        = 13,
        !            51:     HWSETUP_TAG_7SEG        = 14,
        !            52:     HWSETUP_TAG_SPI_S       = 15,
        !            53:     HWSETUP_TAG_SPI_M       = 16,
        !            54: };
        !            55: 
        !            56: static inline HWSetup *hwsetup_init(void)
        !            57: {
        !            58:     HWSetup *hw;
        !            59: 
        !            60:     hw = qemu_malloc(sizeof(HWSetup));
        !            61:     hw->data = qemu_mallocz(TARGET_PAGE_SIZE);
        !            62:     hw->ptr = hw->data;
        !            63: 
        !            64:     return hw;
        !            65: }
        !            66: 
        !            67: static inline void hwsetup_free(HWSetup *hw)
        !            68: {
        !            69:     qemu_free(hw->data);
        !            70:     qemu_free(hw);
        !            71: }
        !            72: 
        !            73: static inline void hwsetup_create_rom(HWSetup *hw,
        !            74:         target_phys_addr_t base)
        !            75: {
        !            76:     rom_add_blob("hwsetup", hw->data, TARGET_PAGE_SIZE, base);
        !            77: }
        !            78: 
        !            79: static inline void hwsetup_add_u8(HWSetup *hw, uint8_t u)
        !            80: {
        !            81:     stb_p(hw->ptr, u);
        !            82:     hw->ptr += 1;
        !            83: }
        !            84: 
        !            85: static inline void hwsetup_add_u32(HWSetup *hw, uint32_t u)
        !            86: {
        !            87:     stl_p(hw->ptr, u);
        !            88:     hw->ptr += 4;
        !            89: }
        !            90: 
        !            91: static inline void hwsetup_add_tag(HWSetup *hw, enum hwsetup_tag t)
        !            92: {
        !            93:     stl_p(hw->ptr, t);
        !            94:     hw->ptr += 4;
        !            95: }
        !            96: 
        !            97: static inline void hwsetup_add_str(HWSetup *hw, const char *str)
        !            98: {
        !            99:     strncpy(hw->ptr, str, 31); /* make sure last byte is zero */
        !           100:     hw->ptr += 32;
        !           101: }
        !           102: 
        !           103: static inline void hwsetup_add_trailer(HWSetup *hw)
        !           104: {
        !           105:     hwsetup_add_u32(hw, 8); /* size */
        !           106:     hwsetup_add_tag(hw, HWSETUP_TAG_EOL);
        !           107: }
        !           108: 
        !           109: static inline void hwsetup_add_cpu(HWSetup *hw,
        !           110:         const char *name, uint32_t frequency)
        !           111: {
        !           112:     hwsetup_add_u32(hw, 44); /* size */
        !           113:     hwsetup_add_tag(hw, HWSETUP_TAG_CPU);
        !           114:     hwsetup_add_str(hw, name);
        !           115:     hwsetup_add_u32(hw, frequency);
        !           116: }
        !           117: 
        !           118: static inline void hwsetup_add_flash(HWSetup *hw,
        !           119:         const char *name, uint32_t base, uint32_t size)
        !           120: {
        !           121:     hwsetup_add_u32(hw, 52); /* size */
        !           122:     hwsetup_add_tag(hw, HWSETUP_TAG_FLASH);
        !           123:     hwsetup_add_str(hw, name);
        !           124:     hwsetup_add_u32(hw, base);
        !           125:     hwsetup_add_u32(hw, size);
        !           126:     hwsetup_add_u8(hw, 8); /* read latency */
        !           127:     hwsetup_add_u8(hw, 8); /* write latency */
        !           128:     hwsetup_add_u8(hw, 25); /* address width */
        !           129:     hwsetup_add_u8(hw, 32); /* data width */
        !           130: }
        !           131: 
        !           132: static inline void hwsetup_add_ddr_sdram(HWSetup *hw,
        !           133:         const char *name, uint32_t base, uint32_t size)
        !           134: {
        !           135:     hwsetup_add_u32(hw, 48); /* size */
        !           136:     hwsetup_add_tag(hw, HWSETUP_TAG_DDR_SDRAM);
        !           137:     hwsetup_add_str(hw, name);
        !           138:     hwsetup_add_u32(hw, base);
        !           139:     hwsetup_add_u32(hw, size);
        !           140: }
        !           141: 
        !           142: static inline void hwsetup_add_timer(HWSetup *hw,
        !           143:         const char *name, uint32_t base, uint32_t irq)
        !           144: {
        !           145:     hwsetup_add_u32(hw, 56); /* size */
        !           146:     hwsetup_add_tag(hw, HWSETUP_TAG_TIMER);
        !           147:     hwsetup_add_str(hw, name);
        !           148:     hwsetup_add_u32(hw, base);
        !           149:     hwsetup_add_u8(hw, 1); /* wr_tickcount */
        !           150:     hwsetup_add_u8(hw, 1); /* rd_tickcount */
        !           151:     hwsetup_add_u8(hw, 1); /* start_stop_control */
        !           152:     hwsetup_add_u8(hw, 32); /* counter_width */
        !           153:     hwsetup_add_u32(hw, 20); /* reload_ticks */
        !           154:     hwsetup_add_u8(hw, irq);
        !           155:     hwsetup_add_u8(hw, 0); /* padding */
        !           156:     hwsetup_add_u8(hw, 0); /* padding */
        !           157:     hwsetup_add_u8(hw, 0); /* padding */
        !           158: }
        !           159: 
        !           160: static inline void hwsetup_add_uart(HWSetup *hw,
        !           161:         const char *name, uint32_t base, uint32_t irq)
        !           162: {
        !           163:     hwsetup_add_u32(hw, 56); /* size */
        !           164:     hwsetup_add_tag(hw, HWSETUP_TAG_UART);
        !           165:     hwsetup_add_str(hw, name);
        !           166:     hwsetup_add_u32(hw, base);
        !           167:     hwsetup_add_u32(hw, 115200); /* baudrate */
        !           168:     hwsetup_add_u8(hw, 8); /* databits */
        !           169:     hwsetup_add_u8(hw, 1); /* stopbits */
        !           170:     hwsetup_add_u8(hw, 1); /* use_interrupt */
        !           171:     hwsetup_add_u8(hw, 1); /* block_on_transmit */
        !           172:     hwsetup_add_u8(hw, 1); /* block_on_receive */
        !           173:     hwsetup_add_u8(hw, 4); /* rx_buffer_size */
        !           174:     hwsetup_add_u8(hw, 4); /* tx_buffer_size */
        !           175:     hwsetup_add_u8(hw, irq);
        !           176: }
        !           177: 
        !           178: #endif /* QEMU_HW_LM32_HWSETUP_H */

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