| 1 | /* |
| 2 | * TI OMAP processors UART emulation. |
| 3 | * |
| 4 | * Copyright (C) 2006-2008 Andrzej Zaborowski <balrog@zabor.org> |
| 5 | * Copyright (C) 2007-2009 Nokia Corporation |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 or |
| 10 | * (at your option) version 3 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
| 19 | */ |
| 20 | #include "qemu/osdep.h" |
| 21 | #include "chardev/char.h" |
| 22 | #include "hw/arm/omap.h" |
| 23 | #include "hw/char/serial-mm.h" |
| 24 | #include "system/address-spaces.h" |
| 25 | |
| 26 | /* UARTs */ |
| 27 | struct omap_uart_s { |
| 28 | MemoryRegion iomem; |
| 29 | hwaddr base; |
| 30 | SerialMM *serial; /* TODO */ |
| 31 | omap_clk fclk; |
| 32 | qemu_irq irq; |
| 33 | |
| 34 | uint8_t eblr; |
| 35 | uint8_t syscontrol; |
| 36 | uint8_t wkup; |
| 37 | uint8_t cfps; |
| 38 | uint8_t clksel; |
| 39 | }; |
| 40 | |
| 41 | void omap_uart_reset(struct omap_uart_s *s) |
| 42 | { |
| 43 | s->eblr = 0x00; |
| 44 | s->syscontrol = 0; |
| 45 | s->wkup = 0x3f; |
| 46 | s->cfps = 0x69; |
| 47 | s->clksel = 0; |
| 48 | } |
| 49 | |
| 50 | struct omap_uart_s *omap_uart_init(hwaddr base, |
| 51 | qemu_irq irq, omap_clk fclk, omap_clk iclk, |
| 52 | qemu_irq txdma, qemu_irq rxdma, |
| 53 | const char *label, Chardev *chr) |
| 54 | { |
| 55 | struct omap_uart_s *s = g_new0(struct omap_uart_s, 1); |
| 56 | |
| 57 | s->base = base; |
| 58 | s->fclk = fclk; |
| 59 | s->irq = irq; |
| 60 | s->serial = serial_mm_init(get_system_memory(), base, 2, irq, |
| 61 | omap_clk_getrate(fclk) / 16, |
| 62 | chr ?: qemu_chr_new(label, "null", NULL), |
| 63 | DEVICE_NATIVE_ENDIAN); |
| 64 | return s; |
| 65 | } |