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hw/openrisc: support 4 serial ports in or1ksim 

The 8250 serial controller supports 4 serial ports, so wire them all up,
so that we can have more than one basic I/O channel.

Cc: Stafford Horne <shorne@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
[smh:Fixup indentation and lines over 80 chars]
Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Jason A. Donenfeld 2022-05-03 01:20:56 +02:00 committed by Stafford Horne
parent 0a923be2f6
commit 777784bda4
1 changed files with 16 additions and 6 deletions
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22
hw/openrisc/openrisc_sim.c
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@ -71,6 +71,10 @@ enum {
OR1KSIM_ETHOC_IRQ = 4,
};
enum {
OR1KSIM_UART_COUNT = 4
};
static const struct MemmapEntry {
hwaddr base;
hwaddr size;
@ -239,11 +243,13 @@ static void openrisc_sim_ompic_init(Or1ksimState *state, hwaddr base,
static void openrisc_sim_serial_init(Or1ksimState *state, hwaddr base,
hwaddr size, int num_cpus,
OpenRISCCPU *cpus[], int irq_pin)
OpenRISCCPU *cpus[], int irq_pin,
int uart_idx)
{
void *fdt = state->fdt;
char *nodename;
qemu_irq serial_irq;
char alias[sizeof("uart0")];
int i;
if (num_cpus > 1) {
@ -258,7 +264,8 @@ static void openrisc_sim_serial_init(Or1ksimState *state, hwaddr base,
serial_irq = get_cpu_irq(cpus, 0, irq_pin);
}
serial_mm_init(get_system_memory(), base, 0, serial_irq, 115200,
serial_hd(0), DEVICE_NATIVE_ENDIAN);
serial_hd(OR1KSIM_UART_COUNT - uart_idx - 1),
DEVICE_NATIVE_ENDIAN);
/* Add device tree node for serial. */
nodename = g_strdup_printf("/serial@%" HWADDR_PRIx, base);
@ -271,7 +278,8 @@ static void openrisc_sim_serial_init(Or1ksimState *state, hwaddr base,
/* The /chosen node is created during fdt creation. */
qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
qemu_fdt_setprop_string(fdt, "/aliases", "uart0", nodename);
snprintf(alias, sizeof(alias), "uart%d", uart_idx);
qemu_fdt_setprop_string(fdt, "/aliases", alias, nodename);
g_free(nodename);
}
@ -414,9 +422,11 @@ static void openrisc_sim_init(MachineState *machine)
smp_cpus, cpus, OR1KSIM_OMPIC_IRQ);
}
openrisc_sim_serial_init(state, or1ksim_memmap[OR1KSIM_UART].base,
or1ksim_memmap[OR1KSIM_UART].size, smp_cpus, cpus,
OR1KSIM_UART_IRQ);
for (n = 0; n < OR1KSIM_UART_COUNT; ++n)
openrisc_sim_serial_init(state, or1ksim_memmap[OR1KSIM_UART].base +
or1ksim_memmap[OR1KSIM_UART].size * n,
or1ksim_memmap[OR1KSIM_UART].size,
smp_cpus, cpus, OR1KSIM_UART_IRQ, n);
load_addr = openrisc_load_kernel(ram_size, kernel_filename);
if (load_addr > 0) {