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-rw-r--r--hw/mips/mips_malta.c133
1 files changed, 87 insertions, 46 deletions
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index a740f614f7..28c351d83d 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -149,7 +149,7 @@ struct _eeprom24c0x_t {
typedef struct _eeprom24c0x_t eeprom24c0x_t;
-static eeprom24c0x_t eeprom = {
+static eeprom24c0x_t spd_eeprom = {
.contents = {
/* 00000000: */ 0x80,0x08,0xFF,0x0D,0x0A,0xFF,0x40,0x00,
/* 00000008: */ 0x01,0x75,0x54,0x00,0x82,0x08,0x00,0x01,
@@ -170,10 +170,10 @@ static eeprom24c0x_t eeprom = {
},
};
-static void eeprom_generate(eeprom24c0x_t *eeprom, ram_addr_t ram_size)
+static void generate_eeprom_spd(uint8_t *eeprom, ram_addr_t ram_size)
{
enum { SDR = 0x4, DDR2 = 0x8 } type;
- uint8_t *spd = eeprom->contents;
+ uint8_t *spd = spd_eeprom.contents;
uint8_t nbanks = 0;
uint16_t density = 0;
int i;
@@ -218,71 +218,109 @@ static void eeprom_generate(eeprom24c0x_t *eeprom, ram_addr_t ram_size)
for (i = 0; i < 63; i++) {
spd[63] += spd[i];
}
+
+ /* copy for SMBUS */
+ memcpy(eeprom, spd, sizeof(spd_eeprom.contents));
+}
+
+static void generate_eeprom_serial(uint8_t *eeprom)
+{
+ int i, pos = 0;
+ uint8_t mac[6] = { 0x00 };
+ uint8_t sn[5] = { 0x01, 0x23, 0x45, 0x67, 0x89 };
+
+ /* version */
+ eeprom[pos++] = 0x01;
+
+ /* count */
+ eeprom[pos++] = 0x02;
+
+ /* MAC address */
+ eeprom[pos++] = 0x01; /* MAC */
+ eeprom[pos++] = 0x06; /* length */
+ memcpy(&eeprom[pos], mac, sizeof(mac));
+ pos += sizeof(mac);
+
+ /* serial number */
+ eeprom[pos++] = 0x02; /* serial */
+ eeprom[pos++] = 0x05; /* length */
+ memcpy(&eeprom[pos], sn, sizeof(sn));
+ pos += sizeof(sn);
+
+ /* checksum */
+ eeprom[pos] = 0;
+ for (i = 0; i < pos; i++) {
+ eeprom[pos] += eeprom[i];
+ }
}
-static uint8_t eeprom24c0x_read(void)
+static uint8_t eeprom24c0x_read(eeprom24c0x_t *eeprom)
{
logout("%u: scl = %u, sda = %u, data = 0x%02x\n",
- eeprom.tick, eeprom.scl, eeprom.sda, eeprom.data);
- return eeprom.sda;
+ eeprom->tick, eeprom->scl, eeprom->sda, eeprom->data);
+ return eeprom->sda;
}
-static void eeprom24c0x_write(int scl, int sda)
+static void eeprom24c0x_write(eeprom24c0x_t *eeprom, int scl, int sda)
{
- if (eeprom.scl && scl && (eeprom.sda != sda)) {
+ if (eeprom->scl && scl && (eeprom->sda != sda)) {
logout("%u: scl = %u->%u, sda = %u->%u i2c %s\n",
- eeprom.tick, eeprom.scl, scl, eeprom.sda, sda, sda ? "stop" : "start");
+ eeprom->tick, eeprom->scl, scl, eeprom->sda, sda,
+ sda ? "stop" : "start");
if (!sda) {
- eeprom.tick = 1;
- eeprom.command = 0;
+ eeprom->tick = 1;
+ eeprom->command = 0;
}
- } else if (eeprom.tick == 0 && !eeprom.ack) {
+ } else if (eeprom->tick == 0 && !eeprom->ack) {
/* Waiting for start. */
logout("%u: scl = %u->%u, sda = %u->%u wait for i2c start\n",
- eeprom.tick, eeprom.scl, scl, eeprom.sda, sda);
- } else if (!eeprom.scl && scl) {
+ eeprom->tick, eeprom->scl, scl, eeprom->sda, sda);
+ } else if (!eeprom->scl && scl) {
logout("%u: scl = %u->%u, sda = %u->%u trigger bit\n",
- eeprom.tick, eeprom.scl, scl, eeprom.sda, sda);
- if (eeprom.ack) {
+ eeprom->tick, eeprom->scl, scl, eeprom->sda, sda);
+ if (eeprom->ack) {
logout("\ti2c ack bit = 0\n");
sda = 0;
- eeprom.ack = 0;
- } else if (eeprom.sda == sda) {
+ eeprom->ack = 0;
+ } else if (eeprom->sda == sda) {
uint8_t bit = (sda != 0);
logout("\ti2c bit = %d\n", bit);
- if (eeprom.tick < 9) {
- eeprom.command <<= 1;
- eeprom.command += bit;
- eeprom.tick++;
- if (eeprom.tick == 9) {
- logout("\tcommand 0x%04x, %s\n", eeprom.command, bit ? "read" : "write");
- eeprom.ack = 1;
+ if (eeprom->tick < 9) {
+ eeprom->command <<= 1;
+ eeprom->command += bit;
+ eeprom->tick++;
+ if (eeprom->tick == 9) {
+ logout("\tcommand 0x%04x, %s\n", eeprom->command,
+ bit ? "read" : "write");
+ eeprom->ack = 1;
}
- } else if (eeprom.tick < 17) {
- if (eeprom.command & 1) {
- sda = ((eeprom.data & 0x80) != 0);
+ } else if (eeprom->tick < 17) {
+ if (eeprom->command & 1) {
+ sda = ((eeprom->data & 0x80) != 0);
}
- eeprom.address <<= 1;
- eeprom.address += bit;
- eeprom.tick++;
- eeprom.data <<= 1;
- if (eeprom.tick == 17) {
- eeprom.data = eeprom.contents[eeprom.address];
- logout("\taddress 0x%04x, data 0x%02x\n", eeprom.address, eeprom.data);
- eeprom.ack = 1;
- eeprom.tick = 0;
+ eeprom->address <<= 1;
+ eeprom->address += bit;
+ eeprom->tick++;
+ eeprom->data <<= 1;
+ if (eeprom->tick == 17) {
+ eeprom->data = eeprom->contents[eeprom->address];
+ logout("\taddress 0x%04x, data 0x%02x\n",
+ eeprom->address, eeprom->data);
+ eeprom->ack = 1;
+ eeprom->tick = 0;
}
- } else if (eeprom.tick >= 17) {
+ } else if (eeprom->tick >= 17) {
sda = 0;
}
} else {
logout("\tsda changed with raising scl\n");
}
} else {
- logout("%u: scl = %u->%u, sda = %u->%u\n", eeprom.tick, eeprom.scl, scl, eeprom.sda, sda);
+ logout("%u: scl = %u->%u, sda = %u->%u\n", eeprom->tick, eeprom->scl,
+ scl, eeprom->sda, sda);
}
- eeprom.scl = scl;
- eeprom.sda = sda;
+ eeprom->scl = scl;
+ eeprom->sda = sda;
}
static uint64_t malta_fpga_read(void *opaque, hwaddr addr,
@@ -345,7 +383,7 @@ static uint64_t malta_fpga_read(void *opaque, hwaddr addr,
/* I2CINP Register */
case 0x00b00:
- val = ((s->i2cin & ~1) | eeprom24c0x_read());
+ val = ((s->i2cin & ~1) | eeprom24c0x_read(&spd_eeprom));
break;
/* I2COE Register */
@@ -441,7 +479,7 @@ static void malta_fpga_write(void *opaque, hwaddr addr,
/* I2COUT Register */
case 0x00b10:
- eeprom24c0x_write(val & 0x02, val & 0x01);
+ eeprom24c0x_write(&spd_eeprom, val & 0x02, val & 0x01);
s->i2cout = val;
break;
@@ -846,6 +884,8 @@ void mips_malta_init(QEMUMachineInitArgs *args)
MemoryRegion *ram = g_new(MemoryRegion, 1);
MemoryRegion *bios, *bios_copy = g_new(MemoryRegion, 1);
target_long bios_size = FLASH_SIZE;
+ const size_t smbus_eeprom_size = 8 * 256;
+ uint8_t *smbus_eeprom_buf = g_malloc0(smbus_eeprom_size);
int64_t kernel_entry;
PCIBus *pci_bus;
ISABus *isa_bus;
@@ -914,7 +954,8 @@ void mips_malta_init(QEMUMachineInitArgs *args)
memory_region_add_subregion(system_memory, 0, ram);
/* generate SPD EEPROM data */
- eeprom_generate(&eeprom, ram_size);
+ generate_eeprom_spd(&smbus_eeprom_buf[0 * 256], ram_size);
+ generate_eeprom_serial(&smbus_eeprom_buf[6 * 256]);
#ifdef TARGET_WORDS_BIGENDIAN
be = 1;
@@ -1035,8 +1076,8 @@ void mips_malta_init(QEMUMachineInitArgs *args)
pci_create_simple(pci_bus, piix4_devfn + 2, "piix4-usb-uhci");
smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100,
isa_get_irq(NULL, 9), NULL, 0, NULL);
- /* TODO: Populate SPD eeprom data. */
- smbus_eeprom_init(smbus, 8, NULL, 0);
+ smbus_eeprom_init(smbus, 8, smbus_eeprom_buf, smbus_eeprom_size);
+ g_free(smbus_eeprom_buf);
pit = pit_init(isa_bus, 0x40, 0, NULL);
cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
DMA_init(0, cpu_exit_irq);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-24 15:24:58 +0000