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-rw-r--r--src/northbridge/amd/amdk8/incoherent_ht.c298
1 files changed, 147 insertions, 151 deletions
diff --git a/src/northbridge/amd/amdk8/incoherent_ht.c b/src/northbridge/amd/amdk8/incoherent_ht.c
index b07c62a5dc..012caf1501 100644
--- a/src/northbridge/amd/amdk8/incoherent_ht.c
+++ b/src/northbridge/amd/amdk8/incoherent_ht.c
@@ -1,11 +1,8 @@
/*
- * incoherent hypertransport enumeration
- * originally written by Eric Biederman
- *
- * 2004.12 yhlu add multi ht chain dynamically support
- * 2005.11 yhlu add let real sb to use small unitid
- * 2006.03 stepan cleanups
- */
+ This should be done by Eric
+ 2004.12 yhlu add multi ht chain dynamically support
+ 2005.11 yhlu add let real sb to use small unitid
+*/
#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <device/hypertransport_def.h>
@@ -22,10 +19,7 @@
#define K8_ALLOCATE_IO_RANGE 0
#endif
-/* Do we need to allocate MMIO? Currently we direct the last 64M
- * to the southbridge link only. We have to remain access to the
- * 4G-4M range for the southbridge (Flash ROM)
- */
+// Do we need allocate MMIO? Current We direct last 64M to sblink only, We can not lose access to last 4M range to ROM
#ifndef K8_ALLOCATE_MMIO_RANGE
#define K8_ALLOCATE_MMIO_RANGE 0
#endif
@@ -55,9 +49,7 @@ static uint8_t ht_lookup_capability(device_t dev, uint16_t val)
if (pos > PCI_CAP_LIST_NEXT) {
pos = pci_read_config8(dev, pos);
}
-
- /* loop through the linked list */
- while(pos != 0) {
+ while(pos != 0) { /* loop through the linked list */
uint8_t cap;
cap = pci_read_config8(dev, pos + PCI_CAP_LIST_ID);
if (cap == PCI_CAP_ID_HT) {
@@ -89,7 +81,7 @@ static void ht_collapse_previous_enumeration(uint8_t bus, unsigned offset_unitid
device_t dev;
uint32_t id;
- // actually, only for one HT device HT chain, and unitid is 0
+ //actually, only for one HT device HT chain, and unitid is 0
#if HT_CHAIN_UNITID_BASE == 0
if(offset_unitid) {
return;
@@ -158,9 +150,11 @@ static uint16_t ht_read_freq_cap(device_t dev, uint8_t pos)
/* AMD K8 Unsupported 1Ghz? */
if (id == (PCI_VENDOR_ID_AMD | (0x1100 << 16))) {
#if K8_HT_FREQ_1G_SUPPORT == 1
+ #if K8_REV_F_SUPPORT == 0
if (is_cpu_pre_e0()) { // only E0 later support 1GHz
freq_cap &= ~(1 << HT_FREQ_1000Mhz);
}
+ #endif
#else
freq_cap &= ~(1 << HT_FREQ_1000Mhz);
#endif
@@ -268,33 +262,22 @@ static int ht_optimize_link(
return needs_reset;
}
-
#if (USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
#if RAMINIT_SYSINFO == 1
-static void ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus,
- unsigned offset_unitid, struct sys_info *sysinfo);
-
-static int scan_pci_bus(unsigned bus, struct sys_info *sysinfo)
+static void ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid, struct sys_info *sysinfo);
+static int scan_pci_bus( unsigned bus , struct sys_info *sysinfo)
#else
-static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus,
- unsigned offset_unitid);
-
-static int scan_pci_bus(unsigned bus)
+static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid);
+static int scan_pci_bus( unsigned bus)
#endif
{
- /* Here we already can access PCI_DEV(bus, 0, 0) to
- * PCI_DEV(bus, 0x1f, 0x7).
- *
- * So scan these devices to find out whether there are more bridges.
- *
- * - If we find a pci bridge, set the bus number in the bridge, and
- * continue with the next device.
- *
- * - For hypertransport bridges, set the bus number in the bridge and
- * call ht_setup_chainx(), and scan_pci_bus()
- *
- */
+ /*
+ here we already can access PCI_DEV(bus, 0, 0) to PCI_DEV(bus, 0x1f, 0x7)
+ So We can scan these devices to find out if they are bridge
+ If it is pci bridge, We need to set busn in bridge, and go on
+ For ht bridge, We need to set the busn in bridge and ht_setup_chainx, and the scan_pci_bus
+ */
unsigned int devfn;
unsigned new_bus;
unsigned max_bus;
@@ -356,18 +339,12 @@ static int scan_pci_bus(unsigned bus)
((unsigned int) max_bus << 16));
pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
- /* Here we need to figure out if dev is a ht
- * bridge. If it is, we need to call
- * ht_setup_chainx() first
- *
- * Not verified --- yhlu
- */
-
- uint8_t upos; // is this valid C?
-
- // one func one ht sub
- upos = ht_lookup_host_capability(dev);
-
+ /* here we need to figure out if dev is a ht bridge
+ if it is ht bridge, we need to call ht_setup_chainx at first
+ Not verified --- yhlu
+ */
+ uint8_t upos;
+ upos = ht_lookup_host_capability(dev); // one func one ht sub
if (upos) { // sub ht chain
uint8_t busn;
busn = (new_bus & 0xff);
@@ -390,7 +367,7 @@ static int scan_pci_bus(unsigned bus)
buses = (buses & 0xff00ffff) |
((unsigned int) (new_bus & 0xff) << 16);
- pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
+ pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
pci_write_config16(dev, PCI_COMMAND, cr);
@@ -405,7 +382,6 @@ static int scan_pci_bus(unsigned bus)
* time probing another function.
* Skip to next device.
*/
-
if ( ((devfn & 0x07) == 0x00) && ((hdr_type & 0x80) != 0x80))
{
devfn += 0x07;
@@ -422,9 +398,7 @@ static void ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned o
static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid)
#endif
{
- // execute this function even with HT_CHAIN_UNITID_BASE == 0,
- // because of the end_of_chain check, and we need it to
- // optimize the links
+ //even HT_CHAIN_UNITID_BASE == 0, we still can go through this function, because of end_of_chain check, also We need it to optimize link
uint8_t next_unitid, last_unitid;
unsigned uoffs;
@@ -434,8 +408,7 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned of
#endif
#if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
- // record the device id of last ht device, so we can set the
- // unit id to HT_CHAIN_END_UNITID_BASE
+ //let't record the device of last ht device, So we can set the Unitid to HT_CHAIN_END_UNITID_BASE
unsigned real_last_unitid;
uint8_t real_last_pos;
int ht_dev_num = 0;
@@ -519,17 +492,15 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned of
next_unitid += count;
- /* Find which side of the ht link we are on, by reading
- * which direction our last write to PCI_CAP_FLAGS came
- * from.
+ /* Find which side of the ht link we are on,
+ * by reading which direction our last write to PCI_CAP_FLAGS
+ * came from.
*/
flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
offs = ((flags>>10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS;
#if RAMINIT_SYSINFO == 1
- /* store the link pair here and we will setup the
- * Hypertransport link later, after we get final FID/VID
- */
+ /* store the link pair here and we will Setup the Hypertransport link later, after we get final FID/VID */
{
struct link_pair_st *link_pair = &sysinfo->link_pair[sysinfo->link_pair_num];
link_pair->udev = udev;
@@ -544,7 +515,7 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned of
reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs);
#endif
- /* Remember the location of the last device */
+ /* Remeber the location of the last device */
udev = dev;
upos = pos;
uoffs = ( offs != PCI_HT_SLAVE0_OFFS ) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS;
@@ -586,8 +557,6 @@ end_of_chain: ;
}
-
-
#if RAMINIT_SYSINFO == 1
static void ht_setup_chain(device_t udev, unsigned upos, struct sys_info *sysinfo)
#else
@@ -618,10 +587,7 @@ static int ht_setup_chain(device_t udev, unsigned upos)
return ht_setup_chainx(udev, upos, 0, offset_unitid);
#endif
}
-
-
-static int optimize_link_read_pointer(uint8_t node, uint8_t linkn,
- uint8_t linkt, uint8_t val)
+static int optimize_link_read_pointer(uint8_t node, uint8_t linkn, uint8_t linkt, uint8_t val)
{
uint32_t dword, dword_old;
uint8_t link_type;
@@ -630,17 +596,16 @@ static int optimize_link_read_pointer(uint8_t node, uint8_t linkn,
dword = pci_read_config32(PCI_DEV(0,0x18+node,0), 0x98 + (linkn * 0x20));
link_type = dword & 0xff;
- dword_old = dword = pci_read_config32(PCI_DEV(0,0x18+node,3), 0xdc);
- /* coherent link only linkt = 3, non coherent = 7*/
- if ( (link_type & 7) == linkt ) {
+ if ( (link_type & 7) == linkt ) { /* Coherent Link only linkt = 3, ncoherent = 7*/
+ dword_old = dword = pci_read_config32(PCI_DEV(0,0x18+node,3), 0xdc);
dword &= ~( 0xff<<(linkn *8) );
dword |= val << (linkn *8);
- }
- if (dword != dword_old) {
- pci_write_config32(PCI_DEV(0,0x18+node,3), 0xdc, dword);
- return 1;
+ if (dword != dword_old) {
+ pci_write_config32(PCI_DEV(0,0x18+node,3), 0xdc, dword);
+ return 1;
+ }
}
return 0;
@@ -658,14 +623,22 @@ static int optimize_link_read_pointers_chain(uint8_t ht_c_num)
uint8_t nodeid, linkn;
uint8_t busn;
uint8_t val;
+ unsigned devn = 1;
+
+ #if HT_CHAIN_UNITID_BASE != 1
+ #if SB_HT_CHAIN_UNITID_OFFSET_ONLY == 1
+ if(i==0) // to check if it is sb ht chain
+ #endif
+ devn = HT_CHAIN_UNITID_BASE;
+ #endif
reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4);
nodeid = ((reg & 0xf0)>>4); // nodeid
linkn = ((reg & 0xf00)>>8); // link n
busn = (reg & 0xff0000)>>16; //busn
-
- reg = pci_read_config32( PCI_DEV(busn, 1, 0), PCI_VENDOR_ID);
+
+ reg = pci_read_config32( PCI_DEV(busn, devn, 0), PCI_VENDOR_ID); // ? the chain dev maybe offseted
if ( (reg & 0xffff) == PCI_VENDOR_ID_AMD) {
val = 0x25;
} else if ( (reg & 0xffff) == PCI_VENDOR_ID_NVIDIA ) {
@@ -681,18 +654,79 @@ static int optimize_link_read_pointers_chain(uint8_t ht_c_num)
return reset_needed;
}
+static int set_ht_link_buffer_count(uint8_t node, uint8_t linkn, uint8_t linkt, unsigned val)
+{
+ uint32_t dword;
+ uint8_t link_type;
+ unsigned regpos;
+ device_t dev;
+
+ /* This works on an Athlon64 because unimplemented links return 0 */
+ regpos = 0x98 + (linkn * 0x20);
+ dev = PCI_DEV(0,0x18+node,0);
+ dword = pci_read_config32(dev, regpos);
+ link_type = dword & 0xff;
+
+ if ( (link_type & 0x7) == linkt ) { /* Coherent Link only linkt = 3, ncoherent = 7*/
+ regpos = 0x90 + (linkn * 0x20);
+ dword = pci_read_config32(dev, regpos );
+
+ if (dword != val) {
+ pci_write_config32(dev, regpos, val);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+static int set_ht_link_buffer_counts_chain(uint8_t ht_c_num, unsigned vendorid, unsigned val)
+{
+ int reset_needed;
+ uint8_t i;
+
+ reset_needed = 0;
+
+ for (i = 0; i < ht_c_num; i++) {
+ uint32_t reg;
+ uint8_t nodeid, linkn;
+ uint8_t busn;
+ unsigned devn = 1;
+
+ #if HT_CHAIN_UNITID_BASE != 1
+ #if SB_HT_CHAIN_UNITID_OFFSET_ONLY == 1
+ if(i==0) // to check if it is sb ht chain
+ #endif
+ devn = HT_CHAIN_UNITID_BASE;
+ #endif
+
+ reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4);
+ if((reg & 3) != 3) continue; // not enabled
+
+ nodeid = ((reg & 0xf0)>>4); // nodeid
+ linkn = ((reg & 0xf00)>>8); // link n
+ busn = (reg & 0xff0000)>>16; //busn
+
+ reg = pci_read_config32( PCI_DEV(busn, devn, 0), PCI_VENDOR_ID); //1?
+ if ( (reg & 0xffff) == vendorid ) {
+ reset_needed |= set_ht_link_buffer_count(nodeid, linkn, 0x07,val);
+ }
+ }
+
+ return reset_needed;
+}
+
+
#if RAMINIT_SYSINFO == 1
static void ht_setup_chains(uint8_t ht_c_num, struct sys_info *sysinfo)
#else
static int ht_setup_chains(uint8_t ht_c_num)
#endif
{
- /* Assumption: The HT chain that is bus 0 has the HT I/O Hub on it.
- * On most boards this just happens. If a cpu has multiple
- * non coherent links the appropriate bus registers for the
+ /* Assumption the HT chain that is bus 0 has the HT I/O Hub on it.
+ * On most boards this just happens. If a cpu has multiple
+ * non Coherent links the appropriate bus registers for the
* links needs to be programed to point at bus 0.
*/
-
uint8_t upos;
device_t udev;
uint8_t i;
@@ -717,14 +751,9 @@ static int ht_setup_chains(uint8_t ht_c_num)
reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4);
- // We need to setup 0x94, 0xb4, and 0xd4 according to reg
-
- // nodeid; it will decide 0x18 or 0x19
- devpos = ((reg & 0xf0)>>4)+0x18;
-
- // link n; it will decide 0x94 or 0xb4, 0x0xd4;
- regpos = ((reg & 0xf00)>>8) * 0x20 + 0x94;
-
+ //We need setup 0x94, 0xb4, and 0xd4 according to the reg
+ devpos = ((reg & 0xf0)>>4)+0x18; // nodeid; it will decide 0x18 or 0x19
+ regpos = ((reg & 0xf00)>>8) * 0x20 + 0x94; // link n; it will decide 0x94 or 0xb4, 0x0xd4;
busn = (reg & 0xff0000)>>16;
dword = pci_read_config32( PCI_DEV(0, devpos, 0), regpos) ;
@@ -753,15 +782,12 @@ static int ht_setup_chains(uint8_t ht_c_num)
#endif
#if (USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
- /* You can not use use this in romcc, because recursive
- * function calls in romcc will kill you
- */
+ /* You can use use this in romcc, because there is function call in romcc, recursive will kill you */
bus = busn; // we need 32 bit
#if RAMINIT_SYSINFO == 1
scan_pci_bus(bus, sysinfo);
#else
- // take out reset_needed that is stored in upword
- reset_needed |= (scan_pci_bus(bus)>>16);
+ reset_needed |= (scan_pci_bus(bus)>>16); // take out reset_needed that stored in upword
#endif
#endif
}
@@ -774,11 +800,9 @@ static int ht_setup_chains(uint8_t ht_c_num)
}
-static inline unsigned get_nodes(void)
-{
- return ((pci_read_config32(PCI_DEV(0, 0x18, 0), 0x60)>>4) & 7) + 1;
-}
-
+#if defined (__GNUC__)
+static inline unsigned get_nodes(void);
+#endif
#if RAMINIT_SYSINFO == 1
static void ht_setup_chains_x(struct sys_info *sysinfo)
@@ -803,15 +827,14 @@ static int ht_setup_chains_x(void)
/* update PCI_DEV(0, 0x18, 1) 0xe0 to 0x05000m03, and next_busn=0x3f+1 */
print_linkn_in("SBLink=", ((reg>>8) & 3) );
#if RAMINIT_SYSINFO == 1
- sysinfo->sblnk = (reg>>8) & 3;
+ sysinfo->sblk = (reg>>8) & 3;
sysinfo->sbbusn = 0;
sysinfo->nodes = nodes;
#endif
tempreg = 3 | ( 0<<4) | (((reg>>8) & 3)<<8) | (0<<16)| (0x3f<<24);
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0, tempreg);
- /* 0 will be used ht chain with SB we need to keep SB in bus 0 in auto stage */
- next_busn=0x3f+1;
+ next_busn=0x3f+1; /* 0 will be used ht chain with SB we need to keep SB in bus0 in auto stage*/
#if K8_ALLOCATE_IO_RANGE == 1
/* io range allocation */
@@ -825,9 +848,12 @@ static int ht_setup_chains_x(void)
/* clean others */
for(ht_c_num=1;ht_c_num<4; ht_c_num++) {
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4, 0);
+
+#if K8_ALLOCATE_IO_RANGE == 1
/* io range allocation */
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xc4 + ht_c_num * 8, 0);
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xc0 + ht_c_num * 8, 0);
+#endif
}
for(nodeid=0; nodeid<nodes; nodeid++) {
@@ -836,67 +862,38 @@ static int ht_setup_chains_x(void)
dev = PCI_DEV(0, 0x18+nodeid,0);
for(linkn = 0; linkn<3; linkn++) {
unsigned regpos;
-
regpos = 0x98 + 0x20 * linkn;
reg = pci_read_config32(dev, regpos);
-
- /* skip if link is non conherent or not connected*/
- if ((reg & 0x17) != 7) continue;
-
- print_linkn_in("NC node|link=",
- ((nodeid & 0xf)<<4)|(linkn & 0xf));
-
+ if ((reg & 0x17) != 7) continue; /* it is not non conherent or not connected*/
+ print_linkn_in("NC node|link=", ((nodeid & 0xf)<<4)|(linkn & 0xf));
tempreg = 3 | (nodeid <<4) | (linkn<<8);
-
- /* compare (temp & 0xffff) with
- * (PCI(0, 0x18, 1) 0xe0 to 0xec & 0xfffff)
- */
+ /*compare (temp & 0xffff), with (PCI(0, 0x18, 1) 0xe0 to 0xec & 0xfffff) */
for(ht_c_num=0;ht_c_num<4; ht_c_num++) {
- reg = pci_read_config32( PCI_DEV(0, 0x18, 1),
- 0xe0 + ht_c_num * 4);
-
- if ( ((reg & 0xffff) == (tempreg & 0xffff))
- || ((reg & 0xffff) == 0x0000) ) {
- /*we got it*/
+ reg = pci_read_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4);
+ if(((reg & 0xffff) == (tempreg & 0xffff)) || ((reg & 0xffff) == 0x0000)) { /*we got it*/
break;
}
}
-
- /* used up the maximum allowed 4 non conherent links */
- if(ht_c_num == 4) break;
-
- /* update to 0xe0...*/
- if((reg & 0xf) == 3) continue; /* SbLink so don't touch it */
-
+ if(ht_c_num == 4) break; /*used up only 4 non conherent allowed*/
+ /*update to 0xe0...*/
+ if((reg & 0xf) == 3) continue; /*SbLink so don't touch it */
print_linkn_in("\tbusn=", next_busn);
-
tempreg |= (next_busn<<16)|((next_busn+0x3f)<<24);
- pci_write_config32(PCI_DEV(0, 0x18, 1),
- 0xe0 + ht_c_num * 4, tempreg);
-
+ pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4, tempreg);
next_busn+=0x3f+1;
#if K8_ALLOCATE_IO_RANGE == 1
/* io range allocation */
-
- // limit
- tempreg = nodeid | (linkn<<4) | ((next_io_base+0x3)<<12);
- pci_write_config32( PCI_DEV(0, 0x18, 1),
- 0xC4 + ht_c_num * 8, tempreg);
-
- // base :ISA and VGA ?
- tempreg = 3 /*| ( 3<<4)*/ | (next_io_base<<12);
- pci_write_config32(PCI_DEV(0, 0x18, 1),
- 0xC0 + ht_c_num * 8, tempreg);
-
+ tempreg = nodeid | (linkn<<4) | ((next_io_base+0x3)<<12); //limit
+ pci_write_config32(PCI_DEV(0, 0x18, 1), 0xC4 + ht_c_num * 8, tempreg);
+ tempreg = 3 /*| ( 3<<4)*/ | (next_io_base<<12); //base :ISA and VGA ?
+ pci_write_config32(PCI_DEV(0, 0x18, 1), 0xC0 + ht_c_num * 8, tempreg);
next_io_base += 0x3+0x1;
#endif
+
}
}
-
- /* update 0xe0, 0xe4, 0xe8, 0xec from PCI_DEV(0, 0x18,1)
- * to PCI_DEV(0, 0x19,1) to PCI_DEV(0, 0x1f,1);
- */
+ /*update 0xe0, 0xe4, 0xe8, 0xec from PCI_DEV(0, 0x18,1) to PCI_DEV(0, 0x19,1) to PCI_DEV(0, 0x1f,1);*/
for(nodeid = 1; nodeid<nodes; nodeid++) {
int i;
@@ -938,6 +935,7 @@ static int ht_setup_chains_x(void)
#if RAMINIT_SYSINFO == 1
sysinfo->ht_c_num = i;
ht_setup_chains(i, sysinfo);
+ sysinfo->sbdn = get_sbdn(sysinfo->sbbusn);
#else
return ht_setup_chains(i);
#endif
@@ -947,7 +945,7 @@ static int ht_setup_chains_x(void)
#if RAMINIT_SYSINFO == 1
static int optimize_link_incoherent_ht(struct sys_info *sysinfo)
{
- // We need to use the recorded link pair info to optimize the link
+ // We need to use recorded link pair info to optimize the link
int i;
int reset_needed = 0;
@@ -955,12 +953,10 @@ static int optimize_link_incoherent_ht(struct sys_info *sysinfo)
for(i=0; i< link_pair_num; i++) {
struct link_pair_st *link_pair= &sysinfo->link_pair[i];
- reset_needed |= ht_optimize_link(link_pair->udev,
- link_pair->upos, link_pair->uoffs,
- link_pair->dev, link_pair->pos, link_pair->offs);
+ reset_needed |= ht_optimize_link(link_pair->udev, link_pair->upos, link_pair->uoffs, link_pair->dev, link_pair->pos, link_pair->offs);
}
- reset_needed |= optimize_link_read_pointers(sysinfo->ht_c_num);
+ reset_needed |= optimize_link_read_pointers_chain(sysinfo->ht_c_num);
return reset_needed;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 01:52:44 +0000