2 * Microchip PolarFire SoC MMUART emulation
4 * Copyright (c) 2020 Wind River Systems, Inc.
7 * Bin Meng <bin.meng@windriver.com>
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 or
12 * (at your option) version 3 of the License.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, see <http://www.gnu.org/licenses/>.
23 #include "qemu/osdep.h"
25 #include "chardev/char.h"
26 #include "exec/address-spaces.h"
27 #include "hw/char/mchp_pfsoc_mmuart.h"
29 static uint64_t mchp_pfsoc_mmuart_read(void *opaque
, hwaddr addr
, unsigned size
)
31 MchpPfSoCMMUartState
*s
= opaque
;
33 if (addr
>= MCHP_PFSOC_MMUART_REG_SIZE
) {
34 qemu_log_mask(LOG_GUEST_ERROR
, "%s: read: addr=0x%" HWADDR_PRIx
"\n",
39 return s
->reg
[addr
/ sizeof(uint32_t)];
42 static void mchp_pfsoc_mmuart_write(void *opaque
, hwaddr addr
,
43 uint64_t value
, unsigned size
)
45 MchpPfSoCMMUartState
*s
= opaque
;
46 uint32_t val32
= (uint32_t)value
;
48 if (addr
>= MCHP_PFSOC_MMUART_REG_SIZE
) {
49 qemu_log_mask(LOG_GUEST_ERROR
, "%s: bad write: addr=0x%" HWADDR_PRIx
50 " v=0x%x\n", __func__
, addr
, val32
);
54 s
->reg
[addr
/ sizeof(uint32_t)] = val32
;
57 static const MemoryRegionOps mchp_pfsoc_mmuart_ops
= {
58 .read
= mchp_pfsoc_mmuart_read
,
59 .write
= mchp_pfsoc_mmuart_write
,
60 .endianness
= DEVICE_LITTLE_ENDIAN
,
67 MchpPfSoCMMUartState
*mchp_pfsoc_mmuart_create(MemoryRegion
*sysmem
,
68 hwaddr base
, qemu_irq irq
, Chardev
*chr
)
70 MchpPfSoCMMUartState
*s
;
72 s
= g_new0(MchpPfSoCMMUartState
, 1);
74 memory_region_init_io(&s
->iomem
, NULL
, &mchp_pfsoc_mmuart_ops
, s
,
75 "mchp.pfsoc.mmuart", 0x1000);
80 s
->serial
= serial_mm_init(sysmem
, base
, 2, irq
, 399193, chr
,
81 DEVICE_LITTLE_ENDIAN
);
83 memory_region_add_subregion(sysmem
, base
+ 0x20, &s
->iomem
);