diff options
Diffstat (limited to 'hw/omap_uart.c')
| -rw-r--r-- | hw/omap_uart.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/hw/omap_uart.c b/hw/omap_uart.c deleted file mode 100644 index af51ce7534..0000000000 --- a/hw/omap_uart.c +++ /dev/null @@ -1,187 +0,0 @@ -/* - * TI OMAP processors UART emulation. - * - * Copyright (C) 2006-2008 Andrzej Zaborowski <balrog@zabor.org> - * Copyright (C) 2007-2009 Nokia Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 or - * (at your option) version 3 of the License. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see <http://www.gnu.org/licenses/>. - */ -#include "char/char.h" -#include "hw/hw.h" -#include "hw/omap.h" -#include "hw/serial.h" -#include "exec/address-spaces.h" - -/* UARTs */ -struct omap_uart_s { - MemoryRegion iomem; - hwaddr base; - SerialState *serial; /* TODO */ - struct omap_target_agent_s *ta; - omap_clk fclk; - qemu_irq irq; - - uint8_t eblr; - uint8_t syscontrol; - uint8_t wkup; - uint8_t cfps; - uint8_t mdr[2]; - uint8_t scr; - uint8_t clksel; -}; - -void omap_uart_reset(struct omap_uart_s *s) -{ - s->eblr = 0x00; - s->syscontrol = 0; - s->wkup = 0x3f; - s->cfps = 0x69; - s->clksel = 0; -} - -struct omap_uart_s *omap_uart_init(hwaddr base, - qemu_irq irq, omap_clk fclk, omap_clk iclk, - qemu_irq txdma, qemu_irq rxdma, - const char *label, CharDriverState *chr) -{ - struct omap_uart_s *s = (struct omap_uart_s *) - g_malloc0(sizeof(struct omap_uart_s)); - - s->base = base; - s->fclk = fclk; - s->irq = irq; - s->serial = serial_mm_init(get_system_memory(), base, 2, irq, - omap_clk_getrate(fclk)/16, - chr ?: qemu_chr_new(label, "null", NULL), - DEVICE_NATIVE_ENDIAN); - return s; -} - -static uint64_t omap_uart_read(void *opaque, hwaddr addr, - unsigned size) -{ - struct omap_uart_s *s = (struct omap_uart_s *) opaque; - - if (size == 4) { - return omap_badwidth_read8(opaque, addr); - } - - switch (addr) { - case 0x20: /* MDR1 */ - return s->mdr[0]; - case 0x24: /* MDR2 */ - return s->mdr[1]; - case 0x40: /* SCR */ - return s->scr; - case 0x44: /* SSR */ - return 0x0; - case 0x48: /* EBLR (OMAP2) */ - return s->eblr; - case 0x4C: /* OSC_12M_SEL (OMAP1) */ - return s->clksel; - case 0x50: /* MVR */ - return 0x30; - case 0x54: /* SYSC (OMAP2) */ - return s->syscontrol; - case 0x58: /* SYSS (OMAP2) */ - return 1; - case 0x5c: /* WER (OMAP2) */ - return s->wkup; - case 0x60: /* CFPS (OMAP2) */ - return s->cfps; - } - - OMAP_BAD_REG(addr); - return 0; -} - -static void omap_uart_write(void *opaque, hwaddr addr, - uint64_t value, unsigned size) -{ - struct omap_uart_s *s = (struct omap_uart_s *) opaque; - - if (size == 4) { - return omap_badwidth_write8(opaque, addr, value); - } - - switch (addr) { - case 0x20: /* MDR1 */ - s->mdr[0] = value & 0x7f; - break; - case 0x24: /* MDR2 */ - s->mdr[1] = value & 0xff; - break; - case 0x40: /* SCR */ - s->scr = value & 0xff; - break; - case 0x48: /* EBLR (OMAP2) */ - s->eblr = value & 0xff; - break; - case 0x4C: /* OSC_12M_SEL (OMAP1) */ - s->clksel = value & 1; - break; - case 0x44: /* SSR */ - case 0x50: /* MVR */ - case 0x58: /* SYSS (OMAP2) */ - OMAP_RO_REG(addr); - break; - case 0x54: /* SYSC (OMAP2) */ - s->syscontrol = value & 0x1d; - if (value & 2) - omap_uart_reset(s); - break; - case 0x5c: /* WER (OMAP2) */ - s->wkup = value & 0x7f; - break; - case 0x60: /* CFPS (OMAP2) */ - s->cfps = value & 0xff; - break; - default: - OMAP_BAD_REG(addr); - } -} - -static const MemoryRegionOps omap_uart_ops = { - .read = omap_uart_read, - .write = omap_uart_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -struct omap_uart_s *omap2_uart_init(MemoryRegion *sysmem, - struct omap_target_agent_s *ta, - qemu_irq irq, omap_clk fclk, omap_clk iclk, - qemu_irq txdma, qemu_irq rxdma, - const char *label, CharDriverState *chr) -{ - hwaddr base = omap_l4_attach(ta, 0, NULL); - struct omap_uart_s *s = omap_uart_init(base, irq, - fclk, iclk, txdma, rxdma, label, chr); - - memory_region_init_io(&s->iomem, &omap_uart_ops, s, "omap.uart", 0x100); - - s->ta = ta; - - memory_region_add_subregion(sysmem, base + 0x20, &s->iomem); - - return s; -} - -void omap_uart_attach(struct omap_uart_s *s, CharDriverState *chr) -{ - /* TODO: Should reuse or destroy current s->serial */ - s->serial = serial_mm_init(get_system_memory(), s->base, 2, s->irq, - omap_clk_getrate(s->fclk) / 16, - chr ?: qemu_chr_new("null", "null", NULL), - DEVICE_NATIVE_ENDIAN); -} |