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, DEVICE_NATIVE_ENDIAN);
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,