mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

riscv: sifive_u: Add PRCI block to the SoC

Browse Source 
Add PRCI mmio base address and size mappings to sifive_u machine,
and generate the corresponding device tree node.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Bin Meng 2019-09-06 09:20:10 -07:00 committed by Palmer Dabbelt
parent e1724d09a6
commit af14c84041
No known key found for this signature in database
GPG Key ID: EF4CA1502CCBAB41
2 changed files with 26 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
hw/riscv/sifive_u.c
View File

@ -9,6 +9,7 @@
* 0) UART
* 1) CLINT (Core Level Interruptor)
* 2) PLIC (Platform Level Interrupt Controller)
* 3) PRCI (Power, Reset, Clock, Interrupt)
*
* This board currently generates devicetree dynamically that indicates at least
* two harts and up to five harts.
@ -60,6 +61,7 @@ static const struct MemmapEntry {
[SIFIVE_U_MROM] = { 0x1000, 0x11000 },
[SIFIVE_U_CLINT] = { 0x2000000, 0x10000 },
[SIFIVE_U_PLIC] = { 0xc000000, 0x4000000 },
[SIFIVE_U_PRCI] = { 0x10000000, 0x1000 },
[SIFIVE_U_UART0] = { 0x10013000, 0x1000 },
[SIFIVE_U_UART1] = { 0x10023000, 0x1000 },
[SIFIVE_U_DRAM] = { 0x80000000, 0x0 },
@ -77,7 +79,7 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
uint32_t *cells;
char *nodename;
char ethclk_names[] = "pclk\0hclk\0tx_clk";
uint32_t plic_phandle, ethclk_phandle, phandle = 1;
uint32_t plic_phandle, prci_phandle, ethclk_phandle, phandle = 1;
uint32_t uartclk_phandle;
uint32_t hfclk_phandle, rtcclk_phandle;
@ -188,6 +190,21 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
g_free(cells);
g_free(nodename);
prci_phandle = phandle++;
nodename = g_strdup_printf("/soc/clock-controller@%lx",
(long)memmap[SIFIVE_U_PRCI].base);
qemu_fdt_add_subnode(fdt, nodename);
qemu_fdt_setprop_cell(fdt, nodename, "phandle", prci_phandle);
qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x1);
qemu_fdt_setprop_cells(fdt, nodename, "clocks",
hfclk_phandle, rtcclk_phandle);
qemu_fdt_setprop_cells(fdt, nodename, "reg",
0x0, memmap[SIFIVE_U_PRCI].base,
0x0, memmap[SIFIVE_U_PRCI].size);
qemu_fdt_setprop_string(fdt, nodename, "compatible",
"sifive,fu540-c000-prci");
g_free(nodename);
plic_phandle = phandle++;
cells = g_new0(uint32_t, ms->smp.cpus * 4 - 2);
for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
@ -402,6 +419,8 @@ static void riscv_sifive_u_soc_init(Object *obj)
qdev_prop_set_uint32(DEVICE(&s->u_cpus), "hartid-base", 1);
qdev_prop_set_string(DEVICE(&s->u_cpus), "cpu-type", SIFIVE_U_CPU);
sysbus_init_child_obj(obj, "prci", &s->prci, sizeof(s->prci),
TYPE_SIFIVE_U_PRCI);
sysbus_init_child_obj(obj, "gem", &s->gem, sizeof(s->gem),
TYPE_CADENCE_GEM);
}
@ -475,6 +494,9 @@ static void riscv_sifive_u_soc_realize(DeviceState *dev, Error **errp)
memmap[SIFIVE_U_CLINT].size, ms->smp.cpus,
SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE);
object_property_set_bool(OBJECT(&s->prci), true, "realized", &err);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->prci), 0, memmap[SIFIVE_U_PRCI].base);
for (i = 0; i < SIFIVE_U_PLIC_NUM_SOURCES; i++) {
plic_gpios[i] = qdev_get_gpio_in(DEVICE(s->plic), i);
}

3
include/hw/riscv/sifive_u.h
View File

@ -22,6 +22,7 @@
#include "hw/net/cadence_gem.h"
#include "hw/riscv/riscv_hart.h"
#include "hw/riscv/sifive_cpu.h"
#include "hw/riscv/sifive_u_prci.h"
#define TYPE_RISCV_U_SOC "riscv.sifive.u.soc"
#define RISCV_U_SOC(obj) \
@ -37,6 +38,7 @@ typedef struct SiFiveUSoCState {
RISCVHartArrayState e_cpus;
RISCVHartArrayState u_cpus;
DeviceState *plic;
SiFiveUPRCIState prci;
CadenceGEMState gem;
} SiFiveUSoCState;
@ -55,6 +57,7 @@ enum {
SIFIVE_U_MROM,
SIFIVE_U_CLINT,
SIFIVE_U_PLIC,
SIFIVE_U_PRCI,
SIFIVE_U_UART0,
SIFIVE_U_UART1,
SIFIVE_U_DRAM,