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arm64: zynqmp: Fix logic in CG/EG/EV detection

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The VCU disable bit(8) in IP disable register of efuse
is valid only if PL powered up and hence PL powerup status
has to be considered while determining the CG part also.
This patch considers the PL powerup status and ignores the VCU
disable bit if PL not powered up.
This fixes the issue of "unknown" id for CG parts if PL not powered up
and VCU bit(8) is not set.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Siva Durga Prasad Paladugu 2018-10-26 17:47:55 +05:30 committed by Michal Simek
parent 23374a97fd
commit 5473f245d0
1 changed files with 37 additions and 11 deletions
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48
board/xilinx/zynqmp/zynqmp.c
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@ -72,6 +72,7 @@ static const struct {
.id = 0x20,
.ver = 0x12c,
.name = "5cg",
.evexists = 1,
},
{
.id = 0x21,
@ -88,6 +89,7 @@ static const struct {
.id = 0x21,
.ver = 0x12c,
.name = "4cg",
.evexists = 1,
},
{
.id = 0x30,
@ -104,6 +106,7 @@ static const struct {
.id = 0x30,
.ver = 0x12c,
.name = "7cg",
.evexists = 1,
},
{
.id = 0x38,
@ -234,14 +237,18 @@ int chip_id(unsigned char id)
#define ZYNQMP_VERSION_SIZE 9
#define ZYNQMP_PL_STATUS_BIT 9
#define ZYNQMP_IPDIS_VCU_BIT 8
#define ZYNQMP_PL_STATUS_MASK BIT(ZYNQMP_PL_STATUS_BIT)
#define ZYNQMP_CSU_VERSION_MASK ~(ZYNQMP_PL_STATUS_MASK)
#define ZYNQMP_CSU_VCUDIS_VER_MASK ZYNQMP_CSU_VERSION_MASK & \
~BIT(ZYNQMP_IPDIS_VCU_BIT)
#define MAX_VARIANTS_EV 3
#if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_ZYNQMPPL) && \
!defined(CONFIG_SPL_BUILD)
static char *zynqmp_get_silicon_idcode_name(void)
{
u32 i, id, ver;
u32 i, id, ver, j;
char *buf;
static char name[ZYNQMP_VERSION_SIZE];
@ -249,24 +256,43 @@ static char *zynqmp_get_silicon_idcode_name(void)
ver = chip_id(IDCODE2);
for (i = 0; i < ARRAY_SIZE(zynqmp_devices); i++) {
if ((zynqmp_devices[i].id == id) &&
(zynqmp_devices[i].ver == (ver &
ZYNQMP_CSU_VERSION_MASK))) {
strncat(name, "zu", 2);
strncat(name, zynqmp_devices[i].name,
ZYNQMP_VERSION_SIZE - 3);
break;
if (zynqmp_devices[i].id == id) {
if (zynqmp_devices[i].evexists &&
!(ver & ZYNQMP_PL_STATUS_MASK))
break;
if (zynqmp_devices[i].ver == (ver &
ZYNQMP_CSU_VERSION_MASK))
break;
}
}
if (i >= ARRAY_SIZE(zynqmp_devices))
return "unknown";
if (!zynqmp_devices[i].evexists)
strncat(name, "zu", 2);
if (!zynqmp_devices[i].evexists ||
(ver & ZYNQMP_PL_STATUS_MASK)) {
strncat(name, zynqmp_devices[i].name,
ZYNQMP_VERSION_SIZE - 3);
return name;
}
if (ver & ZYNQMP_PL_STATUS_MASK)
return name;
/*
* Here we are means, PL not powered up and ev variant
* exists. So, we need to ignore VCU disable bit(8) in
* version and findout if its CG or EG/EV variant.
*/
for (j = 0; j < MAX_VARIANTS_EV; j++, i++) {
if ((zynqmp_devices[i].ver & ~BIT(ZYNQMP_IPDIS_VCU_BIT)) ==
(ver & ZYNQMP_CSU_VCUDIS_VER_MASK)) {
strncat(name, zynqmp_devices[i].name,
ZYNQMP_VERSION_SIZE - 3);
break;
}
}
if (j >= MAX_VARIANTS_EV)
return "unknown";
if (strstr(name, "eg") || strstr(name, "ev")) {
buf = strstr(name, "e");