Commit Graph

55 Commits

Author SHA1 Message Date
Michael Clark
5b4beba124
RISC-V Spike Machines
RISC-V machines compatble with Spike aka riscv-isa-sim, the RISC-V
Instruction Set Simulator. The following machines are implemented:

- 'spike_v1.9.1'; HTIF console, config-string, Privileged ISA Version 1.9.1
- 'spike_v1.10'; HTIF console, device-tree, Privileged ISA Version 1.10

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu>
Signed-off-by: Michael Clark <mjc@sifive.com>
2018-03-07 08:30:28 +13:00
Michael Clark
1e24429e40
SiFive RISC-V PLIC Block
The PLIC (Platform Level Interrupt Controller) device provides a
parameterizable interrupt controller based on SiFive's PLIC specification.

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Stefan O'Rear <sorear2@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
2018-03-07 08:30:28 +13:00
Michael Clark
1c77c410b6
SiFive RISC-V CLINT Block
The CLINT (Core Local Interruptor) device provides real-time clock, timer
and interprocessor interrupts based on SiFive's CLINT specification.

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu>
Signed-off-by: Stefan O'Rear <sorear2@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
2018-03-07 08:30:28 +13:00
Michael Clark
4b50b8d9f2
RISC-V HART Array
Holds the state of a heterogenous array of RISC-V hardware threads.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu>
Signed-off-by: Michael Clark <mjc@sifive.com>
2018-03-07 08:30:28 +13:00
Michael Clark
5033606780
RISC-V HTIF Console
HTIF (Host Target Interface) provides console emulation for QEMU. HTIF
allows identical copies of BBL (Berkeley Boot Loader) and linux to run
on both Spike and QEMU. BBL provides HTIF console access via the
SBI (Supervisor Binary Interface) and the linux kernel SBI console.

The HTIT chardev implements the pre qom legacy interface consistent
with the 16550a UART in 'hw/char/serial.c'.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu>
Signed-off-by: Stefan O'Rear <sorear2@gmail.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
2018-03-07 08:30:28 +13:00