2 * TI OMAP processors UART emulation.
4 * Copyright (C) 2006-2008 Andrzej Zaborowski <balrog@zabor.org>
5 * Copyright (C) 2007-2009 Nokia Corporation
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.
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.
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/>.
20 #include "qemu-char.h"
23 /* We use pc-style serial ports. */
28 target_phys_addr_t base;
29 SerialState *serial; /* TODO */
30 struct omap_target_agent_s *ta;
43 void omap_uart_reset(struct omap_uart_s *s)
52 struct omap_uart_s *omap_uart_init(target_phys_addr_t base,
53 qemu_irq irq, omap_clk fclk, omap_clk iclk,
54 qemu_irq txdma, qemu_irq rxdma,
55 const char *label, CharDriverState *chr)
57 struct omap_uart_s *s = (struct omap_uart_s *)
58 qemu_mallocz(sizeof(struct omap_uart_s));
63 #ifdef TARGET_WORDS_BIGENDIAN
64 s->serial = serial_mm_init(base, 2, irq, omap_clk_getrate(fclk)/16,
65 chr ?: qemu_chr_open(label, "null", NULL), 1,
68 s->serial = serial_mm_init(base, 2, irq, omap_clk_getrate(fclk)/16,
69 chr ?: qemu_chr_open(label, "null", NULL), 1,
75 static uint32_t omap_uart_read(void *opaque, target_phys_addr_t addr)
77 struct omap_uart_s *s = (struct omap_uart_s *) opaque;
89 case 0x48: /* EBLR (OMAP2) */
91 case 0x4C: /* OSC_12M_SEL (OMAP1) */
95 case 0x54: /* SYSC (OMAP2) */
97 case 0x58: /* SYSS (OMAP2) */
99 case 0x5c: /* WER (OMAP2) */
101 case 0x60: /* CFPS (OMAP2) */
109 static void omap_uart_write(void *opaque, target_phys_addr_t addr,
112 struct omap_uart_s *s = (struct omap_uart_s *) opaque;
116 case 0x20: /* MDR1 */
117 s->mdr[0] = value & 0x7f;
119 case 0x24: /* MDR2 */
120 s->mdr[1] = value & 0xff;
123 s->scr = value & 0xff;
125 case 0x48: /* EBLR (OMAP2) */
126 s->eblr = value & 0xff;
128 case 0x4C: /* OSC_12M_SEL (OMAP1) */
129 s->clksel = value & 1;
133 case 0x58: /* SYSS (OMAP2) */
136 case 0x54: /* SYSC (OMAP2) */
137 s->syscontrol = value & 0x1d;
141 case 0x5c: /* WER (OMAP2) */
142 s->wkup = value & 0x7f;
144 case 0x60: /* CFPS (OMAP2) */
145 s->cfps = value & 0xff;
152 static CPUReadMemoryFunc * const omap_uart_readfn[] = {
158 static CPUWriteMemoryFunc * const omap_uart_writefn[] = {
161 omap_badwidth_write8,
164 struct omap_uart_s *omap2_uart_init(struct omap_target_agent_s *ta,
165 qemu_irq irq, omap_clk fclk, omap_clk iclk,
166 qemu_irq txdma, qemu_irq rxdma,
167 const char *label, CharDriverState *chr)
169 target_phys_addr_t base = omap_l4_attach(ta, 0, 0);
170 struct omap_uart_s *s = omap_uart_init(base, irq,
171 fclk, iclk, txdma, rxdma, label, chr);
172 int iomemtype = cpu_register_io_memory(omap_uart_readfn,
173 omap_uart_writefn, s);
177 cpu_register_physical_memory(base + 0x20, 0x100, iomemtype);
182 void omap_uart_attach(struct omap_uart_s *s, CharDriverState *chr)
184 /* TODO: Should reuse or destroy current s->serial */
185 #ifdef TARGET_WORDS_BIGENDIAN
186 s->serial = serial_mm_init(s->base, 2, s->irq,
187 omap_clk_getrate(s->fclk) / 16,
188 chr ?: qemu_chr_open("null", "null", NULL), 1,
191 s->serial = serial_mm_init(s->base, 2, s->irq,
192 omap_clk_getrate(s->fclk) / 16,
193 chr ?: qemu_chr_open("null", "null", NULL), 1,