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hw/riscv: sifive: Change SiFive E/U CPU reset vector to 0x1004

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Per the SiFive manual, all E/U series CPU cores' reset vector is
at 0x1004. Update our codes to match the hardware.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1592268641-7478-3-git-send-email-bmeng.cn@gmail.com
Message-Id: <1592268641-7478-3-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Bin Meng 2020-06-15 17:50:38 -07:00 • committed by Alistair Francis
parent e8905c6ce8
commit 495134b75c
3 changed files with 17 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

10
hw/riscv/sifive_e.c
View file

@ -95,14 +95,16 @@ static void sifive_e_machine_init(MachineState *machine)
memmap[SIFIVE_E_DTIM].base, main_mem);
/* Mask ROM reset vector */
uint32_t reset_vec[2];
uint32_t reset_vec[4];
if (s->revb) {
reset_vec[0] = 0x200102b7; /* 0x1000: lui t0,0x20010 */
reset_vec[1] = 0x200102b7; /* 0x1004: lui t0,0x20010 */
} else {
reset_vec[0] = 0x204002b7; /* 0x1000: lui t0,0x20400 */
reset_vec[1] = 0x204002b7; /* 0x1004: lui t0,0x20400 */
}
reset_vec[1] = 0x00028067; /* 0x1004: jr t0 */
reset_vec[2] = 0x00028067; /* 0x1008: jr t0 */
reset_vec[0] = reset_vec[3] = 0;
/* copy in the reset vector in little_endian byte order */
for (i = 0; i < sizeof(reset_vec) >> 2; i++) {

6
hw/riscv/sifive_u.c
View file

@ -430,18 +430,18 @@ static void sifive_u_machine_init(MachineState *machine)
/* reset vector */
uint32_t reset_vec[8] = {
0x00000000,
0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */
0x02028593, /* addi a1, t0, %pcrel_lo(1b) */
0x01c28593, /* addi a1, t0, %pcrel_lo(1b) */
0xf1402573, /* csrr a0, mhartid */
#if defined(TARGET_RISCV32)
0x0182a283, /* lw t0, 24(t0) */
#elif defined(TARGET_RISCV64)
0x0182b283, /* ld t0, 24(t0) */
0x0182e283, /* lwu t0, 24(t0) */
#endif
0x00028067, /* jr t0 */
0x00000000,
start_addr, /* start: .dword */
0x00000000,
/* dtb: */
};