[PATCH v2] nicintel_eeprom: Support for I210 emulated EEprom
On the I210 family there is no MAC EEprom, instead there is a big flash (typically around 16Mb) with contents of the old MAC plus other stuff. There is an interface to program the whole flash, but once it is programmed it enters a "Secure Mode" that disables the interface. Luckily, the section with the MAC can still be updated via the EEprom interface. This patch adds support for this interface. root@qt5022-fglrx:~# ./flashrom -p nicintel_eeprom:pci=01:0.0 -w kk.raw -V flashrom v0.9.9-unknown on Linux 4.10.0-qtec-standard (x86_64) flashrom is free software, get the source code at https://flashrom.org flashrom was built with libpci 3.4.1, GCC 5.3.0, little endian Command line (5 args): ./flashrom -p nicintel_eeprom:pci=01:0.0 -w kk.raw -V Calibrating delay loop... OS timer resolution is 1 usecs, 1856M loops per second, 10 myus = 10 us, 100 myus = 102 us, 1000 myus = 1017 us, 10000 myus = 10044 us, 4 myus = 4 us, OK. Initializing nicintel_eeprom programmer Found "Intel I210 Gigabit Network Connection" (8086:1533, BDF 01:00.0). Requested BAR is of type MEM, 32bit, not prefetchable Requested BAR is of type MEM, 32bit, not prefetchable The following protocols are supported: Programmer-specific. Probing for Programmer Opaque flash chip, 0 kB: Found Programmer flash chip "Opaque flash chip" (4 kB, Programmer-specific) on nicintel_eeprom. Found Programmer flash chip "Opaque flash chip" (4 kB, Programmer-specific). Reading old flash chip contents... done. Erasing and writing flash chip... Trying erase function 0... 0x000000-0x000fff:W Erase/write done. Verifying flash... VERIFIED. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> --- v2: Please completely ignore v1. nicintel_eeprom.c | 174 ++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 168 insertions(+), 6 deletions(-) diff --git a/nicintel_eeprom.c b/nicintel_eeprom.c index b5d4202b01e0..a63e937f1ce4 100644 --- a/nicintel_eeprom.c +++ b/nicintel_eeprom.c @@ -25,6 +25,12 @@ * 4.7: Access to shared resources (FIXME: we should probably use this semaphore interface) * 7.4: Register Descriptions */ +/* + * Datasheet: Intel Ethernet Controller I210: Datasheet + * 8.4.3: EEPROM-Mode Read Register + * 8.4.6: EEPROM-Mode Write Register + * Write process inspired on kernel e1000_i210.c + */ #include <stdlib.h> #include <unistd.h> @@ -34,10 +40,11 @@ #include "hwaccess.h" #define PCI_VENDOR_ID_INTEL 0x8086 -#define MEMMAP_SIZE (0x14 + 3) /* Only EEC and EERD are needed. */ +#define MEMMAP_SIZE 0x1c /* Only EEC, EERD and EEWR are needed. */ #define EEC 0x10 /* EEPROM/Flash Control Register */ #define EERD 0x14 /* EEPROM Read Register */ +#define EEWR 0x18 /* EEPROM Write Register */ /* EPROM/Flash Control Register bits */ #define EE_SCK 0 @@ -49,6 +56,8 @@ #define EE_PRES 8 #define EE_SIZE 11 #define EE_SIZE_MASK 0xf +#define EE_FLUPD 23 +#define EE_FLUDONE 26 /* EEPROM Read Register bits */ #define EERD_START 0 @@ -56,11 +65,18 @@ #define EERD_ADDR 2 #define EERD_DATA 16 +/* EEPROM Write Register bits */ +#define EEWR_CMDV 0 +#define EEWR_DONE 1 +#define EEWR_ADDR 2 +#define EEWR_DATA 16 + #define BIT(x) (1<<x) #define EE_PAGE_MASK 0x3f static uint8_t *nicintel_eebar; static struct pci_dev *nicintel_pci; +static bool done_i20_write = false; #define UNPROG_DEVICE 0x1509 @@ -71,10 +87,35 @@ const struct dev_entry nics_intel_ee[] = { {PCI_VENDOR_ID_INTEL, 0x1511, NT , "Intel", "82580 Quad Gigabit Ethernet Controller (Ext. PHY)"}, {PCI_VENDOR_ID_INTEL, 0x1511, NT , "Intel", "82580 Dual Gigabit Ethernet Controller (Copper)"}, {PCI_VENDOR_ID_INTEL, UNPROG_DEVICE, OK, "Intel", "Unprogrammed 82580 Quad/Dual Gigabit Ethernet Controller"}, + {PCI_VENDOR_ID_INTEL, 0x1531, NT, "Intel", "I210 Gigabit Network Connection Unprogrammed"}, + {PCI_VENDOR_ID_INTEL, 0x1532, NT, "Intel", "I211 Gigabit Network Connection Unprogrammed"}, + {PCI_VENDOR_ID_INTEL, 0x1533, OK, "Intel", "I210 Gigabit Network Connection"}, + {PCI_VENDOR_ID_INTEL, 0x1536, NT, "Intel", "I210 Gigabit Network Connection SERDES Fiber"}, + {PCI_VENDOR_ID_INTEL, 0x1537, NT, "Intel", "I210 Gigabit Network Connection SERDES Backplane"}, + {PCI_VENDOR_ID_INTEL, 0x1538, NT, "Intel", "I210 Gigabit Network Connection SGMII"}, + {PCI_VENDOR_ID_INTEL, 0x1539, NT, "Intel", "I211 Gigabit Network Connection"}, {0}, }; -static int nicintel_ee_probe(struct flashctx *flash) +static inline bool is_i210(uint16_t device_id) +{ + return (device_id & 0xff00) == 0x1500; +} + +static int nicintel_ee_probe_i210(struct flashctx *flash) +{ + /* Emulated eeprom has a fixed size of 4 KB */ + flash->chip->total_size = 4; + flash->chip->page_size = flash->chip->total_size * 1024; + flash->chip->tested = TEST_OK_PREW; + flash->chip->gran = write_gran_1byte_implicit_erase; + flash->chip->block_erasers->eraseblocks[0].size = flash->chip->page_size; + flash->chip->block_erasers->eraseblocks[0].count = 1; + + return 1; +} + +static int nicintel_ee_probe_82580(struct flashctx *flash) { if (nicintel_pci->device_id == UNPROG_DEVICE) flash->chip->total_size = 16; /* Fall back to minimum supported size. */ @@ -103,6 +144,15 @@ static int nicintel_ee_probe(struct flashctx *flash) return 1; } +static int nicintel_ee_probe(struct flashctx *flash) +{ + if (is_i210(nicintel_pci->device_id)) + return nicintel_ee_probe_i210(flash); + + return nicintel_ee_probe_82580(flash); +} + +#define MAX_ATEMPTS 10000000 static int nicintel_ee_read_word(unsigned int addr, uint16_t *data) { uint32_t tmp = BIT(EERD_START) | (addr << EERD_ADDR); @@ -110,7 +160,7 @@ static int nicintel_ee_read_word(unsigned int addr, uint16_t *data) /* Poll done flag. 10.000.000 cycles seem to be enough. */ uint32_t i; - for (i = 0; i < 10000000; i++) { + for (i = 0; i < MAX_ATEMPTS; i++) { tmp = pci_mmio_readl(nicintel_eebar + EERD); if (tmp & BIT(EERD_DONE)) { *data = (tmp >> EERD_DATA) & 0xffff; @@ -151,6 +201,83 @@ static int nicintel_ee_read(struct flashctx *flash, uint8_t *buf, unsigned int a return 0; } +static int nicintel_ee_write_word_i210(unsigned int addr, uint16_t data) +{ + uint32_t eewr; + + eewr = addr << EEWR_ADDR; + eewr |= data << EEWR_DATA; + eewr |= BIT(EEWR_CMDV); + pci_mmio_writel(eewr, nicintel_eebar + EEWR); + + programmer_delay(5); + for (int i = 0; i < MAX_ATEMPTS; i++) + if (pci_mmio_readl(nicintel_eebar + EEWR) & BIT(EEWR_DONE)) + return 0; + return -1; +} + +static int nicintel_ee_write_i210(struct flashctx *flash, const uint8_t *buf, unsigned int addr, unsigned int len) +{ + done_i20_write = true; + + if (addr & 1) { + uint16_t data; + + if (nicintel_ee_read_word(addr / 2, &data)) { + msg_perr("Timeout reading heading byte\n"); + return -1; + } + + data &= 0xff; + data |= (buf ? (buf[0]) : 0xff) << 8; + + if (nicintel_ee_write_word_i210(addr / 2, data)) { + msg_perr("Timeout writing heading word\n"); + return -1; + } + + if (buf) + buf ++; + addr ++; + len --; + } + + while (len > 0) { + uint16_t data; + + if (len == 1) { + if (nicintel_ee_read_word(addr / 2, &data)) { + msg_perr("Timeout reading tail byte\n"); + return -1; + } + + data &= 0xff00; + data |= buf ? (buf[0]) : 0xff; + } else { + if (buf) + data = buf[0] | (buf[1] << 8); + else + data = 0xffff; + } + + if (nicintel_ee_write_word_i210(addr / 2, data)) { + msg_perr("Timeout writing Shadow RAM\n"); + return -1; + } + + if (buf) + buf += 2; + if (len > 2) + len -= 2; + else + len = 0; + addr += 2; + } + + return 0; +} + static int nicintel_ee_bitset(int reg, int bit, bool val) { uint32_t tmp; @@ -224,7 +351,7 @@ static int nicintel_ee_req(void) return 0; } -static int nicintel_ee_write(struct flashctx *flash, const uint8_t *buf, unsigned int addr, unsigned int len) +static int nicintel_ee_write_82580(struct flashctx *flash, const uint8_t *buf, unsigned int addr, unsigned int len) { if (nicintel_ee_req()) return -1; @@ -262,6 +389,13 @@ out: nicintel_ee_bitset(EEC, EE_REQ, 0); /* Give up direct access. */ return ret; } +static int nicintel_ee_write(struct flashctx *flash, const uint8_t *buf, unsigned int addr, unsigned int len) +{ + if (is_i210(nicintel_pci->device_id)) + return nicintel_ee_write_i210(flash, buf, addr, len); + + return nicintel_ee_write_82580(flash, buf, addr, len); +} static int nicintel_ee_erase(struct flashctx *flash, unsigned int addr, unsigned int len) { @@ -275,6 +409,25 @@ static const struct opaque_master opaque_master_nicintel_ee = { .erase = nicintel_ee_erase, }; +static int nicintel_ee_shutdown_i210(void *arg) +{ + if (!done_i20_write) + return 0; + + uint32_t flup = pci_mmio_readl(nicintel_eebar + EEC); + + flup |= BIT(EE_FLUPD); + pci_mmio_writel(flup, nicintel_eebar + EEC); + + for (int i = 0; i < MAX_ATEMPTS; i++) + if (pci_mmio_readl(nicintel_eebar + EEC) & BIT(EE_FLUDONE)) + return 0; + + msg_perr("Flash update failed\n"); + + return -1; +} + static int nicintel_ee_shutdown(void *eecp) { uint32_t old_eec = *(uint32_t *)eecp; @@ -306,9 +459,14 @@ int nicintel_ee_init(void) if (!io_base_addr) return 1; - nicintel_eebar = rphysmap("Intel Gigabit NIC w/ SPI EEPROM", io_base_addr, MEMMAP_SIZE); + nicintel_eebar = rphysmap("Intel Gigabit NIC w/ SPI EEPROM", + io_base_addr + (is_i210(dev->device_id) ? 0x12000 : 0), MEMMAP_SIZE); + if (!nicintel_eebar) + return 1; + nicintel_pci = dev; - if (dev->device_id != UNPROG_DEVICE) { + if ((dev->device_id != UNPROG_DEVICE) && ! is_i210(dev->device_id)) + { uint32_t eec = pci_mmio_readl(nicintel_eebar + EEC); /* C.f. 3.3.1.5 for the detection mechanism (maybe? contradicting the EE_PRES definition), @@ -327,5 +485,9 @@ int nicintel_ee_init(void) return 1; } + if (is_i210(dev->device_id)) + if (register_shutdown(nicintel_ee_shutdown_i210, NULL)) + return 1; + return register_opaque_master(&opaque_master_nicintel_ee); } -- 2.11.0
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Ricardo Ribalda Delgado