From 5461c4fefed627eac9e1cadfb5754fc985d6df89 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Fri, 6 Sep 2019 09:20:16 -0700 Subject: [PATCH] riscv: sifive_u: Instantiate OTP memory with a serial number This adds an OTP memory with a given serial number to the sifive_u machine. With such support, the upstream U-Boot for sifive_fu540 boots out of the box on the sifive_u machine. Signed-off-by: Bin Meng Reviewed-by: Alistair Francis Signed-off-by: Palmer Dabbelt --- hw/riscv/sifive_u.c | 9 +++++++++ include/hw/riscv/sifive_u.h | 3 +++ 2 files changed, 12 insertions(+) diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 24f8c19eee..f5f0c3cbb2 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -10,6 +10,7 @@ * 1) CLINT (Core Level Interruptor) * 2) PLIC (Platform Level Interrupt Controller) * 3) PRCI (Power, Reset, Clock, Interrupt) + * 4) OTP (One-Time Programmable) memory with stored serial number * * This board currently generates devicetree dynamically that indicates at least * two harts and up to five harts. @@ -64,10 +65,12 @@ static const struct MemmapEntry { [SIFIVE_U_PRCI] = { 0x10000000, 0x1000 }, [SIFIVE_U_UART0] = { 0x10010000, 0x1000 }, [SIFIVE_U_UART1] = { 0x10011000, 0x1000 }, + [SIFIVE_U_OTP] = { 0x10070000, 0x1000 }, [SIFIVE_U_DRAM] = { 0x80000000, 0x0 }, [SIFIVE_U_GEM] = { 0x100900FC, 0x2000 }, }; +#define OTP_SERIAL 1 #define GEM_REVISION 0x10070109 static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, @@ -422,6 +425,9 @@ static void riscv_sifive_u_soc_init(Object *obj) sysbus_init_child_obj(obj, "prci", &s->prci, sizeof(s->prci), TYPE_SIFIVE_U_PRCI); + sysbus_init_child_obj(obj, "otp", &s->otp, sizeof(s->otp), + TYPE_SIFIVE_U_OTP); + qdev_prop_set_uint32(DEVICE(&s->otp), "serial", OTP_SERIAL); sysbus_init_child_obj(obj, "gem", &s->gem, sizeof(s->gem), TYPE_CADENCE_GEM); } @@ -498,6 +504,9 @@ static void riscv_sifive_u_soc_realize(DeviceState *dev, Error **errp) object_property_set_bool(OBJECT(&s->prci), true, "realized", &err); sysbus_mmio_map(SYS_BUS_DEVICE(&s->prci), 0, memmap[SIFIVE_U_PRCI].base); + object_property_set_bool(OBJECT(&s->otp), true, "realized", &err); + sysbus_mmio_map(SYS_BUS_DEVICE(&s->otp), 0, memmap[SIFIVE_U_OTP].base); + for (i = 0; i < SIFIVE_U_PLIC_NUM_SOURCES; i++) { plic_gpios[i] = qdev_get_gpio_in(DEVICE(s->plic), i); } diff --git a/include/hw/riscv/sifive_u.h b/include/hw/riscv/sifive_u.h index 7dfd1cb22e..4d4733cb6a 100644 --- a/include/hw/riscv/sifive_u.h +++ b/include/hw/riscv/sifive_u.h @@ -23,6 +23,7 @@ #include "hw/riscv/riscv_hart.h" #include "hw/riscv/sifive_cpu.h" #include "hw/riscv/sifive_u_prci.h" +#include "hw/riscv/sifive_u_otp.h" #define TYPE_RISCV_U_SOC "riscv.sifive.u.soc" #define RISCV_U_SOC(obj) \ @@ -39,6 +40,7 @@ typedef struct SiFiveUSoCState { RISCVHartArrayState u_cpus; DeviceState *plic; SiFiveUPRCIState prci; + SiFiveUOTPState otp; CadenceGEMState gem; } SiFiveUSoCState; @@ -60,6 +62,7 @@ enum { SIFIVE_U_PRCI, SIFIVE_U_UART0, SIFIVE_U_UART1, + SIFIVE_U_OTP, SIFIVE_U_DRAM, SIFIVE_U_GEM };