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qemu/hw/nvram/xlnx-zynqmp-efuse.c
Tong Ho 67fa02f89f hw/nvram: Introduce Xilinx ZynqMP eFuse device 
This implements the Xilinx ZynqMP eFuse, an one-time
field-programmable non-volatile storage device.  There is
only one such device in the Xilinx ZynqMP product family.

Co-authored-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Co-authored-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Signed-off-by: Tong Ho <tong.ho@xilinx.com>
Message-id: 20210917052400.1249094-4-tong.ho@xilinx.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-09-30 13:42:10 +01:00

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/*
* QEMU model of the ZynqMP eFuse
*
* Copyright (c) 2015 Xilinx Inc.
*
* Written by Edgar E. Iglesias <edgari@xilinx.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/nvram/xlnx-zynqmp-efuse.h"
#include "qemu/log.h"
#include "qapi/error.h"
#include "migration/vmstate.h"
#include "hw/qdev-properties.h"
#ifndef ZYNQMP_EFUSE_ERR_DEBUG
#define ZYNQMP_EFUSE_ERR_DEBUG 0
#endif
REG32(WR_LOCK, 0x0)
FIELD(WR_LOCK, LOCK, 0, 16)
REG32(CFG, 0x4)
FIELD(CFG, SLVERR_ENABLE, 5, 1)
FIELD(CFG, MARGIN_RD, 2, 2)
FIELD(CFG, PGM_EN, 1, 1)
FIELD(CFG, EFUSE_CLK_SEL, 0, 1)
REG32(STATUS, 0x8)
FIELD(STATUS, AES_CRC_PASS, 7, 1)
FIELD(STATUS, AES_CRC_DONE, 6, 1)
FIELD(STATUS, CACHE_DONE, 5, 1)
FIELD(STATUS, CACHE_LOAD, 4, 1)
FIELD(STATUS, EFUSE_3_TBIT, 2, 1)
FIELD(STATUS, EFUSE_2_TBIT, 1, 1)
FIELD(STATUS, EFUSE_0_TBIT, 0, 1)
REG32(EFUSE_PGM_ADDR, 0xc)
FIELD(EFUSE_PGM_ADDR, EFUSE, 11, 2)
FIELD(EFUSE_PGM_ADDR, ROW, 5, 6)
FIELD(EFUSE_PGM_ADDR, COLUMN, 0, 5)
REG32(EFUSE_RD_ADDR, 0x10)
FIELD(EFUSE_RD_ADDR, EFUSE, 11, 2)
FIELD(EFUSE_RD_ADDR, ROW, 5, 6)
REG32(EFUSE_RD_DATA, 0x14)
REG32(TPGM, 0x18)
FIELD(TPGM, VALUE, 0, 16)
REG32(TRD, 0x1c)
FIELD(TRD, VALUE, 0, 8)
REG32(TSU_H_PS, 0x20)
FIELD(TSU_H_PS, VALUE, 0, 8)
REG32(TSU_H_PS_CS, 0x24)
FIELD(TSU_H_PS_CS, VALUE, 0, 8)
REG32(TSU_H_CS, 0x2c)
FIELD(TSU_H_CS, VALUE, 0, 4)
REG32(EFUSE_ISR, 0x30)
FIELD(EFUSE_ISR, APB_SLVERR, 31, 1)
FIELD(EFUSE_ISR, CACHE_ERROR, 4, 1)
FIELD(EFUSE_ISR, RD_ERROR, 3, 1)
FIELD(EFUSE_ISR, RD_DONE, 2, 1)
FIELD(EFUSE_ISR, PGM_ERROR, 1, 1)
FIELD(EFUSE_ISR, PGM_DONE, 0, 1)
REG32(EFUSE_IMR, 0x34)
FIELD(EFUSE_IMR, APB_SLVERR, 31, 1)
FIELD(EFUSE_IMR, CACHE_ERROR, 4, 1)
FIELD(EFUSE_IMR, RD_ERROR, 3, 1)
FIELD(EFUSE_IMR, RD_DONE, 2, 1)
FIELD(EFUSE_IMR, PGM_ERROR, 1, 1)
FIELD(EFUSE_IMR, PGM_DONE, 0, 1)
REG32(EFUSE_IER, 0x38)
FIELD(EFUSE_IER, APB_SLVERR, 31, 1)
FIELD(EFUSE_IER, CACHE_ERROR, 4, 1)
FIELD(EFUSE_IER, RD_ERROR, 3, 1)
FIELD(EFUSE_IER, RD_DONE, 2, 1)
FIELD(EFUSE_IER, PGM_ERROR, 1, 1)
FIELD(EFUSE_IER, PGM_DONE, 0, 1)
REG32(EFUSE_IDR, 0x3c)
FIELD(EFUSE_IDR, APB_SLVERR, 31, 1)
FIELD(EFUSE_IDR, CACHE_ERROR, 4, 1)
FIELD(EFUSE_IDR, RD_ERROR, 3, 1)
FIELD(EFUSE_IDR, RD_DONE, 2, 1)
FIELD(EFUSE_IDR, PGM_ERROR, 1, 1)
FIELD(EFUSE_IDR, PGM_DONE, 0, 1)
REG32(EFUSE_CACHE_LOAD, 0x40)
FIELD(EFUSE_CACHE_LOAD, LOAD, 0, 1)
REG32(EFUSE_PGM_LOCK, 0x44)
FIELD(EFUSE_PGM_LOCK, SPK_ID_LOCK, 0, 1)
REG32(EFUSE_AES_CRC, 0x48)
REG32(EFUSE_TBITS_PRGRMG_EN, 0x100)
FIELD(EFUSE_TBITS_PRGRMG_EN, TBITS_PRGRMG_EN, 3, 1)
REG32(DNA_0, 0x100c)
REG32(DNA_1, 0x1010)
REG32(DNA_2, 0x1014)
REG32(IPDISABLE, 0x1018)
FIELD(IPDISABLE, VCU_DIS, 8, 1)
FIELD(IPDISABLE, GPU_DIS, 5, 1)
FIELD(IPDISABLE, APU3_DIS, 3, 1)
FIELD(IPDISABLE, APU2_DIS, 2, 1)
FIELD(IPDISABLE, APU1_DIS, 1, 1)
FIELD(IPDISABLE, APU0_DIS, 0, 1)
REG32(SYSOSC_CTRL, 0x101c)
FIELD(SYSOSC_CTRL, SYSOSC_EN, 0, 1)
REG32(USER_0, 0x1020)
REG32(USER_1, 0x1024)
REG32(USER_2, 0x1028)
REG32(USER_3, 0x102c)
REG32(USER_4, 0x1030)
REG32(USER_5, 0x1034)
REG32(USER_6, 0x1038)
REG32(USER_7, 0x103c)
REG32(MISC_USER_CTRL, 0x1040)
FIELD(MISC_USER_CTRL, FPD_SC_EN_0, 14, 1)
FIELD(MISC_USER_CTRL, LPD_SC_EN_0, 11, 1)
FIELD(MISC_USER_CTRL, LBIST_EN, 10, 1)
FIELD(MISC_USER_CTRL, USR_WRLK_7, 7, 1)
FIELD(MISC_USER_CTRL, USR_WRLK_6, 6, 1)
FIELD(MISC_USER_CTRL, USR_WRLK_5, 5, 1)
FIELD(MISC_USER_CTRL, USR_WRLK_4, 4, 1)
FIELD(MISC_USER_CTRL, USR_WRLK_3, 3, 1)
FIELD(MISC_USER_CTRL, USR_WRLK_2, 2, 1)
FIELD(MISC_USER_CTRL, USR_WRLK_1, 1, 1)
FIELD(MISC_USER_CTRL, USR_WRLK_0, 0, 1)
REG32(ROM_RSVD, 0x1044)
FIELD(ROM_RSVD, PBR_BOOT_ERROR, 0, 3)
REG32(PUF_CHASH, 0x1050)
REG32(PUF_MISC, 0x1054)
FIELD(PUF_MISC, REGISTER_DIS, 31, 1)
FIELD(PUF_MISC, SYN_WRLK, 30, 1)
FIELD(PUF_MISC, SYN_INVLD, 29, 1)
FIELD(PUF_MISC, TEST2_DIS, 28, 1)
FIELD(PUF_MISC, UNUSED27, 27, 1)
FIELD(PUF_MISC, UNUSED26, 26, 1)
FIELD(PUF_MISC, UNUSED25, 25, 1)
FIELD(PUF_MISC, UNUSED24, 24, 1)
FIELD(PUF_MISC, AUX, 0, 24)
REG32(SEC_CTRL, 0x1058)
FIELD(SEC_CTRL, PPK1_INVLD, 30, 2)
FIELD(SEC_CTRL, PPK1_WRLK, 29, 1)
FIELD(SEC_CTRL, PPK0_INVLD, 27, 2)
FIELD(SEC_CTRL, PPK0_WRLK, 26, 1)
FIELD(SEC_CTRL, RSA_EN, 11, 15)
FIELD(SEC_CTRL, SEC_LOCK, 10, 1)
FIELD(SEC_CTRL, PROG_GATE_2, 9, 1)
FIELD(SEC_CTRL, PROG_GATE_1, 8, 1)
FIELD(SEC_CTRL, PROG_GATE_0, 7, 1)
FIELD(SEC_CTRL, DFT_DIS, 6, 1)
FIELD(SEC_CTRL, JTAG_DIS, 5, 1)
FIELD(SEC_CTRL, ERROR_DIS, 4, 1)
FIELD(SEC_CTRL, BBRAM_DIS, 3, 1)
FIELD(SEC_CTRL, ENC_ONLY, 2, 1)
FIELD(SEC_CTRL, AES_WRLK, 1, 1)
FIELD(SEC_CTRL, AES_RDLK, 0, 1)
REG32(SPK_ID, 0x105c)
REG32(PPK0_0, 0x10a0)
REG32(PPK0_1, 0x10a4)
REG32(PPK0_2, 0x10a8)
REG32(PPK0_3, 0x10ac)
REG32(PPK0_4, 0x10b0)
REG32(PPK0_5, 0x10b4)
REG32(PPK0_6, 0x10b8)
REG32(PPK0_7, 0x10bc)
REG32(PPK0_8, 0x10c0)
REG32(PPK0_9, 0x10c4)
REG32(PPK0_10, 0x10c8)
REG32(PPK0_11, 0x10cc)
REG32(PPK1_0, 0x10d0)
REG32(PPK1_1, 0x10d4)
REG32(PPK1_2, 0x10d8)
REG32(PPK1_3, 0x10dc)
REG32(PPK1_4, 0x10e0)
REG32(PPK1_5, 0x10e4)
REG32(PPK1_6, 0x10e8)
REG32(PPK1_7, 0x10ec)
REG32(PPK1_8, 0x10f0)
REG32(PPK1_9, 0x10f4)
REG32(PPK1_10, 0x10f8)
REG32(PPK1_11, 0x10fc)
#define BIT_POS(ROW, COLUMN) (ROW * 32 + COLUMN)
#define R_MAX (R_PPK1_11 + 1)
/* #define EFUSE_XOSC 26 */
/*
* eFUSE layout references:
* ZynqMP: UG1085 (v2.1) August 21, 2019, p.277, Table 12-13
*/
#define EFUSE_AES_RDLK BIT_POS(22, 0)
#define EFUSE_AES_WRLK BIT_POS(22, 1)
#define EFUSE_ENC_ONLY BIT_POS(22, 2)
#define EFUSE_BBRAM_DIS BIT_POS(22, 3)
#define EFUSE_ERROR_DIS BIT_POS(22, 4)
#define EFUSE_JTAG_DIS BIT_POS(22, 5)
#define EFUSE_DFT_DIS BIT_POS(22, 6)
#define EFUSE_PROG_GATE_0 BIT_POS(22, 7)
#define EFUSE_PROG_GATE_1 BIT_POS(22, 7)
#define EFUSE_PROG_GATE_2 BIT_POS(22, 9)
#define EFUSE_SEC_LOCK BIT_POS(22, 10)
#define EFUSE_RSA_EN BIT_POS(22, 11)
#define EFUSE_RSA_EN14 BIT_POS(22, 25)
#define EFUSE_PPK0_WRLK BIT_POS(22, 26)
#define EFUSE_PPK0_INVLD BIT_POS(22, 27)
#define EFUSE_PPK0_INVLD_1 BIT_POS(22, 28)
#define EFUSE_PPK1_WRLK BIT_POS(22, 29)
#define EFUSE_PPK1_INVLD BIT_POS(22, 30)
#define EFUSE_PPK1_INVLD_1 BIT_POS(22, 31)
/* Areas. */
#define EFUSE_TRIM_START BIT_POS(1, 0)
#define EFUSE_TRIM_END BIT_POS(1, 30)
#define EFUSE_DNA_START BIT_POS(3, 0)
#define EFUSE_DNA_END BIT_POS(5, 31)
#define EFUSE_AES_START BIT_POS(24, 0)
#define EFUSE_AES_END BIT_POS(31, 31)
#define EFUSE_ROM_START BIT_POS(17, 0)
#define EFUSE_ROM_END BIT_POS(17, 31)
#define EFUSE_IPDIS_START BIT_POS(6, 0)
#define EFUSE_IPDIS_END BIT_POS(6, 31)
#define EFUSE_USER_START BIT_POS(8, 0)
#define EFUSE_USER_END BIT_POS(15, 31)
#define EFUSE_BISR_START BIT_POS(32, 0)
#define EFUSE_BISR_END BIT_POS(39, 31)
#define EFUSE_USER_CTRL_START BIT_POS(16, 0)
#define EFUSE_USER_CTRL_END BIT_POS(16, 16)
#define EFUSE_USER_CTRL_MASK ((uint32_t)MAKE_64BIT_MASK(0, 17))
#define EFUSE_PUF_CHASH_START BIT_POS(20, 0)
#define EFUSE_PUF_CHASH_END BIT_POS(20, 31)
#define EFUSE_PUF_MISC_START BIT_POS(21, 0)
#define EFUSE_PUF_MISC_END BIT_POS(21, 31)
#define EFUSE_PUF_SYN_WRLK BIT_POS(21, 30)
#define EFUSE_SPK_START BIT_POS(23, 0)
#define EFUSE_SPK_END BIT_POS(23, 31)
#define EFUSE_PPK0_START BIT_POS(40, 0)
#define EFUSE_PPK0_END BIT_POS(51, 31)
#define EFUSE_PPK1_START BIT_POS(52, 0)
#define EFUSE_PPK1_END BIT_POS(63, 31)
#define EFUSE_CACHE_FLD(s, reg, field) \
ARRAY_FIELD_DP32((s)->regs, reg, field, \
(xlnx_efuse_get_row((s->efuse), EFUSE_ ## field) \
>> (EFUSE_ ## field % 32)))
#define EFUSE_CACHE_BIT(s, reg, field) \
ARRAY_FIELD_DP32((s)->regs, reg, field, xlnx_efuse_get_bit((s->efuse), \
EFUSE_ ## field))
#define FBIT_UNKNOWN (~0)
QEMU_BUILD_BUG_ON(R_MAX != ARRAY_SIZE(((XlnxZynqMPEFuse *)0)->regs));
static void update_tbit_status(XlnxZynqMPEFuse *s)
{
unsigned int check = xlnx_efuse_tbits_check(s->efuse);
uint32_t val = s->regs[R_STATUS];
val = FIELD_DP32(val, STATUS, EFUSE_0_TBIT, !!(check & (1 << 0)));
val = FIELD_DP32(val, STATUS, EFUSE_2_TBIT, !!(check & (1 << 1)));
val = FIELD_DP32(val, STATUS, EFUSE_3_TBIT, !!(check & (1 << 2)));
s->regs[R_STATUS] = val;
}
/* Update the u32 array from efuse bits. Slow but simple approach. */
static void cache_sync_u32(XlnxZynqMPEFuse *s, unsigned int r_start,
unsigned int f_start, unsigned int f_end,
unsigned int f_written)
{
uint32_t *u32 = &s->regs[r_start];
unsigned int fbit, wbits = 0, u32_off = 0;
/* Avoid working on bits that are not relevant. */
if (f_written != FBIT_UNKNOWN
&& (f_written < f_start || f_written > f_end)) {
return;
}
for (fbit = f_start; fbit <= f_end; fbit++, wbits++) {
if (wbits == 32) {
/* Update the key offset. */
u32_off += 1;
wbits = 0;
}
u32[u32_off] |= xlnx_efuse_get_bit(s->efuse, fbit) << wbits;
}
}
/*
* Keep the syncs in bit order so we can bail out for the
* slower ones.
*/
static void zynqmp_efuse_sync_cache(XlnxZynqMPEFuse *s, unsigned int bit)
{
EFUSE_CACHE_BIT(s, SEC_CTRL, AES_RDLK);
EFUSE_CACHE_BIT(s, SEC_CTRL, AES_WRLK);
EFUSE_CACHE_BIT(s, SEC_CTRL, ENC_ONLY);
EFUSE_CACHE_BIT(s, SEC_CTRL, BBRAM_DIS);
EFUSE_CACHE_BIT(s, SEC_CTRL, ERROR_DIS);
EFUSE_CACHE_BIT(s, SEC_CTRL, JTAG_DIS);
EFUSE_CACHE_BIT(s, SEC_CTRL, DFT_DIS);
EFUSE_CACHE_BIT(s, SEC_CTRL, PROG_GATE_0);
EFUSE_CACHE_BIT(s, SEC_CTRL, PROG_GATE_1);
EFUSE_CACHE_BIT(s, SEC_CTRL, PROG_GATE_2);
EFUSE_CACHE_BIT(s, SEC_CTRL, SEC_LOCK);
EFUSE_CACHE_BIT(s, SEC_CTRL, PPK0_WRLK);
EFUSE_CACHE_BIT(s, SEC_CTRL, PPK1_WRLK);
EFUSE_CACHE_FLD(s, SEC_CTRL, RSA_EN);
EFUSE_CACHE_FLD(s, SEC_CTRL, PPK0_INVLD);
EFUSE_CACHE_FLD(s, SEC_CTRL, PPK1_INVLD);
/* Update the tbits. */
update_tbit_status(s);
/* Sync the various areas. */
s->regs[R_MISC_USER_CTRL] = xlnx_efuse_get_row(s->efuse,
EFUSE_USER_CTRL_START)
& EFUSE_USER_CTRL_MASK;
s->regs[R_PUF_CHASH] = xlnx_efuse_get_row(s->efuse, EFUSE_PUF_CHASH_START);
s->regs[R_PUF_MISC] = xlnx_efuse_get_row(s->efuse, EFUSE_PUF_MISC_START);
cache_sync_u32(s, R_DNA_0, EFUSE_DNA_START, EFUSE_DNA_END, bit);
if (bit < EFUSE_AES_START) {
return;
}
cache_sync_u32(s, R_ROM_RSVD, EFUSE_ROM_START, EFUSE_ROM_END, bit);
cache_sync_u32(s, R_IPDISABLE, EFUSE_IPDIS_START, EFUSE_IPDIS_END, bit);
cache_sync_u32(s, R_USER_0, EFUSE_USER_START, EFUSE_USER_END, bit);
cache_sync_u32(s, R_SPK_ID, EFUSE_SPK_START, EFUSE_SPK_END, bit);
cache_sync_u32(s, R_PPK0_0, EFUSE_PPK0_START, EFUSE_PPK0_END, bit);
cache_sync_u32(s, R_PPK1_0, EFUSE_PPK1_START, EFUSE_PPK1_END, bit);
}
static void zynqmp_efuse_update_irq(XlnxZynqMPEFuse *s)
{
bool pending = s->regs[R_EFUSE_ISR] & s->regs[R_EFUSE_IMR];
qemu_set_irq(s->irq, pending);
}
static void zynqmp_efuse_isr_postw(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(reg->opaque);
zynqmp_efuse_update_irq(s);
}
static uint64_t zynqmp_efuse_ier_prew(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(reg->opaque);
uint32_t val = val64;
s->regs[R_EFUSE_IMR] |= val;
zynqmp_efuse_update_irq(s);
return 0;
}
static uint64_t zynqmp_efuse_idr_prew(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(reg->opaque);
uint32_t val = val64;
s->regs[R_EFUSE_IMR] &= ~val;
zynqmp_efuse_update_irq(s);
return 0;
}
static void zynqmp_efuse_pgm_addr_postw(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(reg->opaque);
unsigned bit = val64;
unsigned page = FIELD_EX32(bit, EFUSE_PGM_ADDR, EFUSE);
bool puf_prot = false;
const char *errmsg = NULL;
/* Allow only valid array, and adjust for skipped array 1 */
switch (page) {
case 0:
break;
case 2 ... 3:
bit = FIELD_DP32(bit, EFUSE_PGM_ADDR, EFUSE, page - 1);
puf_prot = xlnx_efuse_get_bit(s->efuse, EFUSE_PUF_SYN_WRLK);
break;
default:
errmsg = "Invalid address";
goto pgm_done;
}
if (ARRAY_FIELD_EX32(s->regs, WR_LOCK, LOCK)) {
errmsg = "Array write-locked";
goto pgm_done;
}
if (!ARRAY_FIELD_EX32(s->regs, CFG, PGM_EN)) {
errmsg = "Array pgm-disabled";
goto pgm_done;
}
if (puf_prot) {
errmsg = "PUF_HD-store write-locked";
goto pgm_done;
}
if (ARRAY_FIELD_EX32(s->regs, SEC_CTRL, AES_WRLK)
&& bit >= EFUSE_AES_START && bit <= EFUSE_AES_END) {
errmsg = "AES key-store Write-locked";
goto pgm_done;
}
if (!xlnx_efuse_set_bit(s->efuse, bit)) {
errmsg = "Write failed";
}
pgm_done:
if (!errmsg) {
ARRAY_FIELD_DP32(s->regs, EFUSE_ISR, PGM_ERROR, 0);
} else {
ARRAY_FIELD_DP32(s->regs, EFUSE_ISR, PGM_ERROR, 1);
qemu_log_mask(LOG_GUEST_ERROR,
"%s - eFuse write error: %s; addr=0x%x\n",
object_get_canonical_path(OBJECT(s)),
errmsg, (unsigned)val64);
}
ARRAY_FIELD_DP32(s->regs, EFUSE_ISR, PGM_DONE, 1);
zynqmp_efuse_update_irq(s);
}
static void zynqmp_efuse_rd_addr_postw(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(reg->opaque);
/*
* Grant reads only to allowed bits; reference sources:
* 1/ XilSKey - XilSKey_ZynqMp_EfusePs_ReadRow()
* 2/ UG1085, v2.0, table 12-13
* (note: enumerates the masks as <first, last> per described in
* references to avoid mental translation).
*/
#define COL_MASK(L_, H_) \
((uint32_t)MAKE_64BIT_MASK((L_), (1 + (H_) - (L_))))
static const uint32_t ary0_col_mask[] = {
/* XilSKey - XSK_ZYNQMP_EFUSEPS_TBITS_ROW */
[0] = COL_MASK(28, 31),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_USR{0:7}_FUSE_ROW */
[8] = COL_MASK(0, 31), [9] = COL_MASK(0, 31),
[10] = COL_MASK(0, 31), [11] = COL_MASK(0, 31),
[12] = COL_MASK(0, 31), [13] = COL_MASK(0, 31),
[14] = COL_MASK(0, 31), [15] = COL_MASK(0, 31),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_MISC_USR_CTRL_ROW */
[16] = COL_MASK(0, 7) | COL_MASK(10, 16),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_PBR_BOOT_ERR_ROW */
[17] = COL_MASK(0, 2),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_PUF_CHASH_ROW */
[20] = COL_MASK(0, 31),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_PUF_AUX_ROW */
[21] = COL_MASK(0, 23) | COL_MASK(29, 31),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_SEC_CTRL_ROW */
[22] = COL_MASK(0, 31),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_SPK_ID_ROW */
[23] = COL_MASK(0, 31),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_PPK0_START_ROW */
[40] = COL_MASK(0, 31), [41] = COL_MASK(0, 31),
[42] = COL_MASK(0, 31), [43] = COL_MASK(0, 31),
[44] = COL_MASK(0, 31), [45] = COL_MASK(0, 31),
[46] = COL_MASK(0, 31), [47] = COL_MASK(0, 31),
[48] = COL_MASK(0, 31), [49] = COL_MASK(0, 31),
[50] = COL_MASK(0, 31), [51] = COL_MASK(0, 31),
/* XilSKey - XSK_ZYNQMP_EFUSEPS_PPK1_START_ROW */
[52] = COL_MASK(0, 31), [53] = COL_MASK(0, 31),
[54] = COL_MASK(0, 31), [55] = COL_MASK(0, 31),
[56] = COL_MASK(0, 31), [57] = COL_MASK(0, 31),
[58] = COL_MASK(0, 31), [59] = COL_MASK(0, 31),
[60] = COL_MASK(0, 31), [61] = COL_MASK(0, 31),
[62] = COL_MASK(0, 31), [63] = COL_MASK(0, 31),
};
uint32_t col_mask = COL_MASK(0, 31);
#undef COL_MASK
uint32_t efuse_idx = s->regs[R_EFUSE_RD_ADDR];
uint32_t efuse_ary = FIELD_EX32(efuse_idx, EFUSE_RD_ADDR, EFUSE);
uint32_t efuse_row = FIELD_EX32(efuse_idx, EFUSE_RD_ADDR, ROW);
switch (efuse_ary) {
case 0: /* Various */
if (efuse_row >= ARRAY_SIZE(ary0_col_mask)) {
goto denied;
}
col_mask = ary0_col_mask[efuse_row];
if (!col_mask) {
goto denied;
}
break;
case 2: /* PUF helper data, adjust for skipped array 1 */
case 3:
val64 = FIELD_DP32(efuse_idx, EFUSE_RD_ADDR, EFUSE, efuse_ary - 1);
break;
default:
goto denied;
}
s->regs[R_EFUSE_RD_DATA] = xlnx_efuse_get_row(s->efuse, val64) & col_mask;
ARRAY_FIELD_DP32(s->regs, EFUSE_ISR, RD_ERROR, 0);
ARRAY_FIELD_DP32(s->regs, EFUSE_ISR, RD_DONE, 1);
zynqmp_efuse_update_irq(s);
return;
denied:
qemu_log_mask(LOG_GUEST_ERROR,
"%s: Denied efuse read from array %u, row %u\n",
object_get_canonical_path(OBJECT(s)),
efuse_ary, efuse_row);
s->regs[R_EFUSE_RD_DATA] = 0;
ARRAY_FIELD_DP32(s->regs, EFUSE_ISR, RD_ERROR, 1);
ARRAY_FIELD_DP32(s->regs, EFUSE_ISR, RD_DONE, 0);
zynqmp_efuse_update_irq(s);
}
static void zynqmp_efuse_aes_crc_postw(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(reg->opaque);
bool ok;
ok = xlnx_efuse_k256_check(s->efuse, (uint32_t)val64, EFUSE_AES_START);
ARRAY_FIELD_DP32(s->regs, STATUS, AES_CRC_PASS, (ok ? 1 : 0));
ARRAY_FIELD_DP32(s->regs, STATUS, AES_CRC_DONE, 1);
s->regs[R_EFUSE_AES_CRC] = 0; /* crc value is write-only */
}
static uint64_t zynqmp_efuse_cache_load_prew(RegisterInfo *reg,
uint64_t valu64)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(reg->opaque);
if (valu64 & R_EFUSE_CACHE_LOAD_LOAD_MASK) {
zynqmp_efuse_sync_cache(s, FBIT_UNKNOWN);
ARRAY_FIELD_DP32(s->regs, STATUS, CACHE_DONE, 1);
zynqmp_efuse_update_irq(s);
}
return 0;
}
static uint64_t zynqmp_efuse_wr_lock_prew(RegisterInfo *reg, uint64_t val)
{
return val == 0xDF0D ? 0 : 1;
}
static RegisterAccessInfo zynqmp_efuse_regs_info[] = {
{ .name = "WR_LOCK", .addr = A_WR_LOCK,
.reset = 0x1,
.pre_write = zynqmp_efuse_wr_lock_prew,
},{ .name = "CFG", .addr = A_CFG,
},{ .name = "STATUS", .addr = A_STATUS,
.rsvd = 0x8,
.ro = 0xff,
},{ .name = "EFUSE_PGM_ADDR", .addr = A_EFUSE_PGM_ADDR,
.post_write = zynqmp_efuse_pgm_addr_postw
},{ .name = "EFUSE_RD_ADDR", .addr = A_EFUSE_RD_ADDR,
.rsvd = 0x1f,
.post_write = zynqmp_efuse_rd_addr_postw,
},{ .name = "EFUSE_RD_DATA", .addr = A_EFUSE_RD_DATA,
.ro = 0xffffffff,
},{ .name = "TPGM", .addr = A_TPGM,
},{ .name = "TRD", .addr = A_TRD,
.reset = 0x1b,
},{ .name = "TSU_H_PS", .addr = A_TSU_H_PS,
.reset = 0xff,
},{ .name = "TSU_H_PS_CS", .addr = A_TSU_H_PS_CS,
.reset = 0xb,
},{ .name = "TSU_H_CS", .addr = A_TSU_H_CS,
.reset = 0x7,
},{ .name = "EFUSE_ISR", .addr = A_EFUSE_ISR,
.rsvd = 0x7fffffe0,
.w1c = 0x8000001f,
.post_write = zynqmp_efuse_isr_postw,
},{ .name = "EFUSE_IMR", .addr = A_EFUSE_IMR,
.reset = 0x8000001f,
.rsvd = 0x7fffffe0,
.ro = 0xffffffff,
},{ .name = "EFUSE_IER", .addr = A_EFUSE_IER,
.rsvd = 0x7fffffe0,
.pre_write = zynqmp_efuse_ier_prew,
},{ .name = "EFUSE_IDR", .addr = A_EFUSE_IDR,
.rsvd = 0x7fffffe0,
.pre_write = zynqmp_efuse_idr_prew,
},{ .name = "EFUSE_CACHE_LOAD", .addr = A_EFUSE_CACHE_LOAD,
.pre_write = zynqmp_efuse_cache_load_prew,
},{ .name = "EFUSE_PGM_LOCK", .addr = A_EFUSE_PGM_LOCK,
},{ .name = "EFUSE_AES_CRC", .addr = A_EFUSE_AES_CRC,
.post_write = zynqmp_efuse_aes_crc_postw,
},{ .name = "EFUSE_TBITS_PRGRMG_EN", .addr = A_EFUSE_TBITS_PRGRMG_EN,
.reset = R_EFUSE_TBITS_PRGRMG_EN_TBITS_PRGRMG_EN_MASK,
},{ .name = "DNA_0", .addr = A_DNA_0,
.ro = 0xffffffff,
},{ .name = "DNA_1", .addr = A_DNA_1,
.ro = 0xffffffff,
},{ .name = "DNA_2", .addr = A_DNA_2,
.ro = 0xffffffff,
},{ .name = "IPDISABLE", .addr = A_IPDISABLE,
.ro = 0xffffffff,
},{ .name = "SYSOSC_CTRL", .addr = A_SYSOSC_CTRL,
.ro = 0xffffffff,
},{ .name = "USER_0", .addr = A_USER_0,
.ro = 0xffffffff,
},{ .name = "USER_1", .addr = A_USER_1,
.ro = 0xffffffff,
},{ .name = "USER_2", .addr = A_USER_2,
.ro = 0xffffffff,
},{ .name = "USER_3", .addr = A_USER_3,
.ro = 0xffffffff,
},{ .name = "USER_4", .addr = A_USER_4,
.ro = 0xffffffff,
},{ .name = "USER_5", .addr = A_USER_5,
.ro = 0xffffffff,
},{ .name = "USER_6", .addr = A_USER_6,
.ro = 0xffffffff,
},{ .name = "USER_7", .addr = A_USER_7,
.ro = 0xffffffff,
},{ .name = "MISC_USER_CTRL", .addr = A_MISC_USER_CTRL,
.ro = 0xffffffff,
},{ .name = "ROM_RSVD", .addr = A_ROM_RSVD,
.ro = 0xffffffff,
},{ .name = "PUF_CHASH", .addr = A_PUF_CHASH,
.ro = 0xffffffff,
},{ .name = "PUF_MISC", .addr = A_PUF_MISC,
.ro = 0xffffffff,
},{ .name = "SEC_CTRL", .addr = A_SEC_CTRL,
.ro = 0xffffffff,
},{ .name = "SPK_ID", .addr = A_SPK_ID,
.ro = 0xffffffff,
},{ .name = "PPK0_0", .addr = A_PPK0_0,
.ro = 0xffffffff,
},{ .name = "PPK0_1", .addr = A_PPK0_1,
.ro = 0xffffffff,
},{ .name = "PPK0_2", .addr = A_PPK0_2,
.ro = 0xffffffff,
},{ .name = "PPK0_3", .addr = A_PPK0_3,
.ro = 0xffffffff,
},{ .name = "PPK0_4", .addr = A_PPK0_4,
.ro = 0xffffffff,
},{ .name = "PPK0_5", .addr = A_PPK0_5,
.ro = 0xffffffff,
},{ .name = "PPK0_6", .addr = A_PPK0_6,
.ro = 0xffffffff,
},{ .name = "PPK0_7", .addr = A_PPK0_7,
.ro = 0xffffffff,
},{ .name = "PPK0_8", .addr = A_PPK0_8,
.ro = 0xffffffff,
},{ .name = "PPK0_9", .addr = A_PPK0_9,
.ro = 0xffffffff,
},{ .name = "PPK0_10", .addr = A_PPK0_10,
.ro = 0xffffffff,
},{ .name = "PPK0_11", .addr = A_PPK0_11,
.ro = 0xffffffff,
},{ .name = "PPK1_0", .addr = A_PPK1_0,
.ro = 0xffffffff,
},{ .name = "PPK1_1", .addr = A_PPK1_1,
.ro = 0xffffffff,
},{ .name = "PPK1_2", .addr = A_PPK1_2,
.ro = 0xffffffff,
},{ .name = "PPK1_3", .addr = A_PPK1_3,
.ro = 0xffffffff,
},{ .name = "PPK1_4", .addr = A_PPK1_4,
.ro = 0xffffffff,
},{ .name = "PPK1_5", .addr = A_PPK1_5,
.ro = 0xffffffff,
},{ .name = "PPK1_6", .addr = A_PPK1_6,
.ro = 0xffffffff,
},{ .name = "PPK1_7", .addr = A_PPK1_7,
.ro = 0xffffffff,
},{ .name = "PPK1_8", .addr = A_PPK1_8,
.ro = 0xffffffff,
},{ .name = "PPK1_9", .addr = A_PPK1_9,
.ro = 0xffffffff,
},{ .name = "PPK1_10", .addr = A_PPK1_10,
.ro = 0xffffffff,
},{ .name = "PPK1_11", .addr = A_PPK1_11,
.ro = 0xffffffff,
}
};
static void zynqmp_efuse_reg_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size)
{
RegisterInfoArray *reg_array = opaque;
XlnxZynqMPEFuse *s;
Object *dev;
assert(reg_array != NULL);
dev = reg_array->mem.owner;
assert(dev);
s = XLNX_ZYNQMP_EFUSE(dev);
if (addr != A_WR_LOCK && s->regs[R_WR_LOCK]) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s[reg_0x%02lx]: Attempt to write locked register.\n",
object_get_canonical_path(OBJECT(s)), (long)addr);
} else {
register_write_memory(opaque, addr, data, size);
}
}
static const MemoryRegionOps zynqmp_efuse_ops = {
.read = register_read_memory,
.write = zynqmp_efuse_reg_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
};
static void zynqmp_efuse_register_reset(RegisterInfo *reg)
{
if (!reg->data || !reg->access) {
return;
}
/* Reset must not trigger some registers' writers */
switch (reg->access->addr) {
case A_EFUSE_AES_CRC:
*(uint32_t *)reg->data = reg->access->reset;
return;
}
register_reset(reg);
}
static void zynqmp_efuse_reset(DeviceState *dev)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(dev);
unsigned int i;
for (i = 0; i < ARRAY_SIZE(s->regs_info); ++i) {
zynqmp_efuse_register_reset(&s->regs_info[i]);
}
zynqmp_efuse_sync_cache(s, FBIT_UNKNOWN);
ARRAY_FIELD_DP32(s->regs, STATUS, CACHE_DONE, 1);
zynqmp_efuse_update_irq(s);
}
static void zynqmp_efuse_realize(DeviceState *dev, Error **errp)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(dev);
if (!s->efuse) {
error_setg(errp, "%s.efuse: link property not connected to XLNX-EFUSE",
object_get_canonical_path(OBJECT(dev)));
return;
}
s->efuse->dev = dev;
}
static void zynqmp_efuse_init(Object *obj)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
RegisterInfoArray *reg_array;
reg_array =
register_init_block32(DEVICE(obj), zynqmp_efuse_regs_info,
ARRAY_SIZE(zynqmp_efuse_regs_info),
s->regs_info, s->regs,
&zynqmp_efuse_ops,
ZYNQMP_EFUSE_ERR_DEBUG,
R_MAX * 4);
sysbus_init_mmio(sbd, &reg_array->mem);
sysbus_init_irq(sbd, &s->irq);
}
static const VMStateDescription vmstate_efuse = {
.name = TYPE_XLNX_ZYNQMP_EFUSE,
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, XlnxZynqMPEFuse, R_MAX),
VMSTATE_END_OF_LIST(),
}
};
static Property zynqmp_efuse_props[] = {
DEFINE_PROP_LINK("efuse",
XlnxZynqMPEFuse, efuse,
TYPE_XLNX_EFUSE, XlnxEFuse *),
DEFINE_PROP_END_OF_LIST(),
};
static void zynqmp_efuse_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->reset = zynqmp_efuse_reset;
dc->realize = zynqmp_efuse_realize;
dc->vmsd = &vmstate_efuse;
device_class_set_props(dc, zynqmp_efuse_props);
}
static const TypeInfo efuse_info = {
.name = TYPE_XLNX_ZYNQMP_EFUSE,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(XlnxZynqMPEFuse),
.class_init = zynqmp_efuse_class_init,
.instance_init = zynqmp_efuse_init,
};
static void efuse_register_types(void)
{
type_register_static(&efuse_info);
}
type_init(efuse_register_types)
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