Here is the same patch, with my suggested changes and some other stuff on top (constification, naming the Xilinx DLC-5 cable "dlc5" in anticipation of the buffered DLC-5 variant) to avoid changing things twice. I tried to dig up the history of this patch, hopefully I got it right.
Am 01.04.2013 23:55 schrieb Kyösti Mälkki: > Create a list of programmer types with names. This list could be > listed with flashrom -L in follow-up patches. > > Handle a bit in status register that is inverted, this will be used > in different future programmer types. > > Signed-off-by: Kyösti Mälkki <[email protected]> > Tested-by: Maksim Kuleshov <[email protected]> > Acked-by: Kyösti Mälkki <[email protected]> rayer_spi: Rework handling of programmer types Store rayer_spi programmer types with configuration data in an array. Bit 7 of the LPT status register is inverted, automatically handle this for future users. The Xilinx DLC-5 cable is now selected with type=dlc-5 instead of dev=xilinx. Patch originally by Maksim Kuleshov, reworked by Kyösti Mälkki and Carl-Daniel Hailfinger. Maksim/Kyösti, can I get your signoff? Signed-off-by: Carl-Daniel Hailfinger <[email protected]> Index: flashrom-maksim_rayer_spi_rework_type_selection/rayer_spi.c =================================================================== --- flashrom-maksim_rayer_spi_rework_type_selection/rayer_spi.c (Revision 1667) +++ flashrom-maksim_rayer_spi_rework_type_selection/rayer_spi.c (Arbeitskopie) @@ -19,6 +19,7 @@ /* Driver for the SPIPGM hardware by "RayeR" Martin Rehak. * See http://rayer.ic.cz/elektro/spipgm.htm for schematics and instructions. + * Other LPT-based SPI programming hardware is supported as well. */ /* This driver uses non-portable direct I/O port accesses which won't work on @@ -37,22 +38,50 @@ #include "programmer.h" #include "hwaccess.h" -enum rayer_type { - TYPE_RAYER, - TYPE_XILINX_DLC5, -}; - /* We have two sets of pins, out and in. The numbers for both sets are * independent and are bitshift values, not real pin numbers. * Default settings are for the RayeR hardware. */ -/* Pins for master->slave direction */ -static int rayer_cs_bit = 5; -static int rayer_sck_bit = 6; -static int rayer_mosi_bit = 7; -/* Pins for slave->master direction */ -static int rayer_miso_bit = 6; +struct noid_dev_entry { + const char *type; + const enum test_state status; + const char *description; + const void *dev_data; +}; + +struct rayer_pinout { + uint8_t cs_bit; + uint8_t sck_bit; + uint8_t mosi_bit; + uint8_t miso_bit; + void (*init)(void *); + int (*shutdown)(void *); +}; + +static const struct rayer_pinout rayer_spipgm = { + .cs_bit = 5, + .sck_bit = 6, + .mosi_bit = 7, + .miso_bit = 6, +}; + +static const struct rayer_pinout xilinx_dlc5 = { + .cs_bit = 2, + .sck_bit = 1, + .mosi_bit = 0, + .miso_bit = 4, +}; + +/* List of supported devices, first one is the default. */ +static const struct noid_dev_entry rayer_spi_devs[] = { + {"rayer", NT, "RayeR SPIPGM", &rayer_spipgm}, + {"dlc-5", NT, "Xilinx Parallel Cable III (DLC 5)", &xilinx_dlc5}, + {0}, +}; + +static struct rayer_pinout *pinout = NULL; + static uint16_t lpt_iobase; /* Cached value of last byte sent. */ @@ -60,22 +89,22 @@ static void rayer_bitbang_set_cs(int val) { - lpt_outbyte &= ~(1 << rayer_cs_bit); - lpt_outbyte |= (val << rayer_cs_bit); + lpt_outbyte &= ~(1 << pinout->cs_bit); + lpt_outbyte |= (val << pinout->cs_bit); OUTB(lpt_outbyte, lpt_iobase); } static void rayer_bitbang_set_sck(int val) { - lpt_outbyte &= ~(1 << rayer_sck_bit); - lpt_outbyte |= (val << rayer_sck_bit); + lpt_outbyte &= ~(1 << pinout->sck_bit); + lpt_outbyte |= (val << pinout->sck_bit); OUTB(lpt_outbyte, lpt_iobase); } static void rayer_bitbang_set_mosi(int val) { - lpt_outbyte &= ~(1 << rayer_mosi_bit); - lpt_outbyte |= (val << rayer_mosi_bit); + lpt_outbyte &= ~(1 << pinout->mosi_bit); + lpt_outbyte |= (val << pinout->mosi_bit); OUTB(lpt_outbyte, lpt_iobase); } @@ -83,8 +112,8 @@ { uint8_t tmp; - tmp = INB(lpt_iobase + 1); - tmp = (tmp >> rayer_miso_bit) & 0x1; + tmp = INB(lpt_iobase + 1) ^ 0x80; // bit 7 is inverted + tmp = (tmp >> pinout->miso_bit) & 0x1; return tmp; } @@ -99,8 +128,9 @@ int rayer_spi_init(void) { + /* Pick the first entry in rayer_spi_devs as default. */ + const struct noid_dev_entry *dev = rayer_spi_devs; char *arg = NULL; - enum rayer_type rayer_type = TYPE_RAYER; /* Non-default port requested? */ arg = extract_programmer_param("iobase"); @@ -138,36 +168,18 @@ arg = extract_programmer_param("type"); if (arg) { - if (!strcasecmp(arg, "rayer")) { - rayer_type = TYPE_RAYER; - } else if (!strcasecmp(arg, "xilinx")) { - rayer_type = TYPE_XILINX_DLC5; - } else { - msg_perr("Error: Invalid device type specified.\n"); + for (; dev->type; ++dev) + if (!strcasecmp(arg, dev->type)) + break; + if(!dev->type) { + msg_perr("Error: Invalid device type \"%s\"specified.\n", arg); free(arg); return 1; } + free(arg); } - free(arg); - switch (rayer_type) { - case TYPE_RAYER: - msg_pdbg("Using RayeR SPIPGM pinout.\n"); - /* Bits for master->slave direction */ - rayer_cs_bit = 5; - rayer_sck_bit = 6; - rayer_mosi_bit = 7; - /* Bits for slave->master direction */ - rayer_miso_bit = 6; - break; - case TYPE_XILINX_DLC5: - msg_pdbg("Using Xilinx Parallel Cable III (DLC 5) pinout.\n"); - /* Bits for master->slave direction */ - rayer_cs_bit = 2; - rayer_sck_bit = 1; - rayer_mosi_bit = 0; - /* Bits for slave->master direction */ - rayer_miso_bit = 4; - } + msg_pinfo("Using %s pinout.\n", dev->description); + pinout = (struct rayer_pinout *) dev->dev_data; if (rget_io_perms()) return 1; @@ -175,6 +187,11 @@ /* Get the initial value before writing to any line. */ lpt_outbyte = INB(lpt_iobase); + if (pinout->shutdown) + register_shutdown(pinout->shutdown, pinout); + if (pinout->init) + pinout->init(pinout); + if (bitbang_spi_init(&bitbang_spi_master_rayer)) return 1; Index: flashrom-maksim_rayer_spi_rework_type_selection/flashrom.8 =================================================================== --- flashrom-maksim_rayer_spi_rework_type_selection/flashrom.8 (Revision 1667) +++ flashrom-maksim_rayer_spi_rework_type_selection/flashrom.8 (Arbeitskopie) @@ -715,7 +715,7 @@ syntax where .B model can be -.BR rayer " for the RayeR cable or " xilinx " for the Xilinx Parallel Cable III +.BR rayer " for the RayeR cable or " dlc-5 " for the Xilinx Parallel Cable III (DLC 5). .sp More information about the RayeR hardware is available at -- http://www.hailfinger.org/ _______________________________________________ flashrom mailing list [email protected] http://www.flashrom.org/mailman/listinfo/flashrom
