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/*
* LatticeMico32 hwsetup helper functions.
*
* Copyright (c) 2010 Michael Walle <michael@walle.cc>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* These are helper functions for creating the hardware description blob used
* in the Theobroma's uClinux port.
*/
#ifndef QEMU_HW_LM32_HWSETUP_H
#define QEMU_HW_LM32_HWSETUP_H
#include "qemu-common.h"
#include "loader.h"
typedef struct {
void *data;
void *ptr;
} HWSetup;
enum hwsetup_tag {
HWSETUP_TAG_EOL = 0,
HWSETUP_TAG_CPU = 1,
HWSETUP_TAG_ASRAM = 2,
HWSETUP_TAG_FLASH = 3,
HWSETUP_TAG_SDRAM = 4,
HWSETUP_TAG_OCM = 5,
HWSETUP_TAG_DDR_SDRAM = 6,
HWSETUP_TAG_DDR2_SDRAM = 7,
HWSETUP_TAG_TIMER = 8,
HWSETUP_TAG_UART = 9,
HWSETUP_TAG_GPIO = 10,
HWSETUP_TAG_TRISPEEDMAC = 11,
HWSETUP_TAG_I2CM = 12,
HWSETUP_TAG_LEDS = 13,
HWSETUP_TAG_7SEG = 14,
HWSETUP_TAG_SPI_S = 15,
HWSETUP_TAG_SPI_M = 16,
};
static inline HWSetup *hwsetup_init(void)
{
HWSetup *hw;
hw = qemu_malloc(sizeof(HWSetup));
hw->data = qemu_mallocz(TARGET_PAGE_SIZE);
hw->ptr = hw->data;
return hw;
}
static inline void hwsetup_free(HWSetup *hw)
{
qemu_free(hw->data);
qemu_free(hw);
}
static inline void hwsetup_create_rom(HWSetup *hw,
target_phys_addr_t base)
{
rom_add_blob("hwsetup", hw->data, TARGET_PAGE_SIZE, base);
}
static inline void hwsetup_add_u8(HWSetup *hw, uint8_t u)
{
stb_p(hw->ptr, u);
hw->ptr += 1;
}
static inline void hwsetup_add_u32(HWSetup *hw, uint32_t u)
{
stl_p(hw->ptr, u);
hw->ptr += 4;
}
static inline void hwsetup_add_tag(HWSetup *hw, enum hwsetup_tag t)
{
stl_p(hw->ptr, t);
hw->ptr += 4;
}
static inline void hwsetup_add_str(HWSetup *hw, const char *str)
{
strncpy(hw->ptr, str, 31); /* make sure last byte is zero */
hw->ptr += 32;
}
static inline void hwsetup_add_trailer(HWSetup *hw)
{
hwsetup_add_u32(hw, 8); /* size */
hwsetup_add_tag(hw, HWSETUP_TAG_EOL);
}
static inline void hwsetup_add_cpu(HWSetup *hw,
const char *name, uint32_t frequency)
{
hwsetup_add_u32(hw, 44); /* size */
hwsetup_add_tag(hw, HWSETUP_TAG_CPU);
hwsetup_add_str(hw, name);
hwsetup_add_u32(hw, frequency);
}
static inline void hwsetup_add_flash(HWSetup *hw,
const char *name, uint32_t base, uint32_t size)
{
hwsetup_add_u32(hw, 52); /* size */
hwsetup_add_tag(hw, HWSETUP_TAG_FLASH);
hwsetup_add_str(hw, name);
hwsetup_add_u32(hw, base);
hwsetup_add_u32(hw, size);
hwsetup_add_u8(hw, 8); /* read latency */
hwsetup_add_u8(hw, 8); /* write latency */
hwsetup_add_u8(hw, 25); /* address width */
hwsetup_add_u8(hw, 32); /* data width */
}
static inline void hwsetup_add_ddr_sdram(HWSetup *hw,
const char *name, uint32_t base, uint32_t size)
{
hwsetup_add_u32(hw, 48); /* size */
hwsetup_add_tag(hw, HWSETUP_TAG_DDR_SDRAM);
hwsetup_add_str(hw, name);
hwsetup_add_u32(hw, base);
hwsetup_add_u32(hw, size);
}
static inline void hwsetup_add_timer(HWSetup *hw,
const char *name, uint32_t base, uint32_t irq)
{
hwsetup_add_u32(hw, 56); /* size */
hwsetup_add_tag(hw, HWSETUP_TAG_TIMER);
hwsetup_add_str(hw, name);
hwsetup_add_u32(hw, base);
hwsetup_add_u8(hw, 1); /* wr_tickcount */
hwsetup_add_u8(hw, 1); /* rd_tickcount */
hwsetup_add_u8(hw, 1); /* start_stop_control */
hwsetup_add_u8(hw, 32); /* counter_width */
hwsetup_add_u32(hw, 20); /* reload_ticks */
hwsetup_add_u8(hw, irq);
hwsetup_add_u8(hw, 0); /* padding */
hwsetup_add_u8(hw, 0); /* padding */
hwsetup_add_u8(hw, 0); /* padding */
}
static inline void hwsetup_add_uart(HWSetup *hw,
const char *name, uint32_t base, uint32_t irq)
{
hwsetup_add_u32(hw, 56); /* size */
hwsetup_add_tag(hw, HWSETUP_TAG_UART);
hwsetup_add_str(hw, name);
hwsetup_add_u32(hw, base);
hwsetup_add_u32(hw, 115200); /* baudrate */
hwsetup_add_u8(hw, 8); /* databits */
hwsetup_add_u8(hw, 1); /* stopbits */
hwsetup_add_u8(hw, 1); /* use_interrupt */
hwsetup_add_u8(hw, 1); /* block_on_transmit */
hwsetup_add_u8(hw, 1); /* block_on_receive */
hwsetup_add_u8(hw, 4); /* rx_buffer_size */
hwsetup_add_u8(hw, 4); /* tx_buffer_size */
hwsetup_add_u8(hw, irq);
}
#endif /* QEMU_HW_LM32_HWSETUP_H */
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