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author | Tim Harvey <tharvey@gateworks.com> | 2014-06-02 16:13:25 -0700 |
---|---|---|
committer | Stefano Babic <sbabic@denx.de> | 2014-06-06 10:07:26 +0200 |
commit | 1badf2f47cbbb0e8aab82dfe89a4f85d8f498e5f (patch) | |
tree | d0b6ef97d08f9de1c60d434c8057655bc78adf9a /board/gateworks/gw_ventana | |
parent | 5bf497e3fdba14cb39f8752ae7646d77dc49d519 (diff) | |
download | u-boot-imx-1badf2f47cbbb0e8aab82dfe89a4f85d8f498e5f.zip u-boot-imx-1badf2f47cbbb0e8aab82dfe89a4f85d8f498e5f.tar.gz u-boot-imx-1badf2f47cbbb0e8aab82dfe89a4f85d8f498e5f.tar.bz2 |
imx: ventana: split read_eeprom into standalone file
Split the read_eeprom function out so that it can be shared (ie with SPL)
Cc: Stefan Roese <sr@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Andy Ng <andreas2025@gmail.com>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Tapani Utriainen <tapani@technexion.com>
Cc: Tom Rini <trini@ti.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Diffstat (limited to 'board/gateworks/gw_ventana')
-rw-r--r-- | board/gateworks/gw_ventana/Makefile | 2 | ||||
-rw-r--r-- | board/gateworks/gw_ventana/eeprom.c | 89 | ||||
-rw-r--r-- | board/gateworks/gw_ventana/gw_ventana.c | 89 | ||||
-rw-r--r-- | board/gateworks/gw_ventana/ventana_eeprom.h | 11 |
4 files changed, 102 insertions, 89 deletions
diff --git a/board/gateworks/gw_ventana/Makefile b/board/gateworks/gw_ventana/Makefile index e8dab89..03bd1fd 100644 --- a/board/gateworks/gw_ventana/Makefile +++ b/board/gateworks/gw_ventana/Makefile @@ -6,5 +6,5 @@ # SPDX-License-Identifier: GPL-2.0+ # -obj-y := gw_ventana.o gsc.o +obj-y := gw_ventana.o gsc.o eeprom.o diff --git a/board/gateworks/gw_ventana/eeprom.c b/board/gateworks/gw_ventana/eeprom.c new file mode 100644 index 0000000..e90186e --- /dev/null +++ b/board/gateworks/gw_ventana/eeprom.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2014 Gateworks Corporation + * Author: Tim Harvey <tharvey@gateworks.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <i2c.h> + +#include "gsc.h" +#include "ventana_eeprom.h" + +/* read ventana EEPROM, check for validity, and return baseboard type */ +int +read_eeprom(int bus, struct ventana_board_info *info) +{ + int i; + int chksum; + char baseboard; + int type; + unsigned char *buf = (unsigned char *)info; + + memset(info, 0, sizeof(*info)); + + /* + * On a board with a missing/depleted backup battery for GSC, the + * board may be ready to probe the GSC before its firmware is + * running. We will wait here indefinately for the GSC/EEPROM. + */ + while (1) { + if (0 == i2c_set_bus_num(bus) && + 0 == i2c_probe(GSC_EEPROM_ADDR)) + break; + mdelay(1); + } + + /* read eeprom config section */ + if (gsc_i2c_read(GSC_EEPROM_ADDR, 0x00, 1, buf, sizeof(*info))) { + puts("EEPROM: Failed to read EEPROM\n"); + info->model[0] = 0; + return GW_UNKNOWN; + } + + /* sanity checks */ + if (info->model[0] != 'G' || info->model[1] != 'W') { + puts("EEPROM: Invalid Model in EEPROM\n"); + info->model[0] = 0; + return GW_UNKNOWN; + } + + /* validate checksum */ + for (chksum = 0, i = 0; i < sizeof(*info)-2; i++) + chksum += buf[i]; + if ((info->chksum[0] != chksum>>8) || + (info->chksum[1] != (chksum&0xff))) { + puts("EEPROM: Failed EEPROM checksum\n"); + info->model[0] = 0; + return GW_UNKNOWN; + } + + /* original GW5400-A prototype */ + baseboard = info->model[3]; + if (strncasecmp((const char *)info->model, "GW5400-A", 8) == 0) + baseboard = '0'; + + switch (baseboard) { + case '0': /* original GW5400-A prototype */ + type = GW54proto; + break; + case '1': + type = GW51xx; + break; + case '2': + type = GW52xx; + break; + case '3': + type = GW53xx; + break; + case '4': + type = GW54xx; + break; + default: + printf("EEPROM: Unknown model in EEPROM: %s\n", info->model); + type = GW_UNKNOWN; + break; + } + return type; +} diff --git a/board/gateworks/gw_ventana/gw_ventana.c b/board/gateworks/gw_ventana/gw_ventana.c index 031367d..a39374d 100644 --- a/board/gateworks/gw_ventana/gw_ventana.c +++ b/board/gateworks/gw_ventana/gw_ventana.c @@ -84,15 +84,6 @@ DECLARE_GLOBAL_DATA_PTR; */ static struct ventana_board_info ventana_info; -enum { - GW54proto, /* original GW5400-A prototype */ - GW51xx, - GW52xx, - GW53xx, - GW54xx, - GW_UNKNOWN, -}; - int board_type; /* UART1: Function varies per baseboard */ @@ -499,84 +490,6 @@ static void setup_display(void) } #endif /* CONFIG_VIDEO_IPUV3 */ -/* read ventana EEPROM, check for validity, and return baseboard type */ -static int -read_eeprom(void) -{ - int i; - int chksum; - char baseboard; - int type; - struct ventana_board_info *info = &ventana_info; - unsigned char *buf = (unsigned char *)&ventana_info; - - memset(info, 0, sizeof(ventana_info)); - - /* - * On a board with a missing/depleted backup battery for GSC, the - * board may be ready to probe the GSC before its firmware is - * running. We will wait here indefinately for the GSC/EEPROM. - */ - while (1) { - if (0 == i2c_set_bus_num(I2C_GSC) && - 0 == i2c_probe(GSC_EEPROM_ADDR)) - break; - mdelay(1); - } - - /* read eeprom config section */ - if (gsc_i2c_read(GSC_EEPROM_ADDR, 0x00, 1, buf, sizeof(ventana_info))) { - puts("EEPROM: Failed to read EEPROM\n"); - info->model[0] = 0; - return GW_UNKNOWN; - } - - /* sanity checks */ - if (info->model[0] != 'G' || info->model[1] != 'W') { - puts("EEPROM: Invalid Model in EEPROM\n"); - info->model[0] = 0; - return GW_UNKNOWN; - } - - /* validate checksum */ - for (chksum = 0, i = 0; i < sizeof(*info)-2; i++) - chksum += buf[i]; - if ((info->chksum[0] != chksum>>8) || - (info->chksum[1] != (chksum&0xff))) { - puts("EEPROM: Failed EEPROM checksum\n"); - info->model[0] = 0; - return GW_UNKNOWN; - } - - /* original GW5400-A prototype */ - baseboard = info->model[3]; - if (strncasecmp((const char *)info->model, "GW5400-A", 8) == 0) - baseboard = '0'; - - switch (baseboard) { - case '0': /* original GW5400-A prototype */ - type = GW54proto; - break; - case '1': - type = GW51xx; - break; - case '2': - type = GW52xx; - break; - case '3': - type = GW53xx; - break; - case '4': - type = GW54xx; - break; - default: - printf("EEPROM: Unknown model in EEPROM: %s\n", info->model); - type = GW_UNKNOWN; - break; - } - return type; -} - /* * Baseboard specific GPIO */ @@ -1114,7 +1027,7 @@ int board_init(void) setup_sata(); #endif /* read Gateworks EEPROM into global struct (used later) */ - board_type = read_eeprom(); + board_type = read_eeprom(I2C_GSC, &ventana_info); /* board-specifc GPIO iomux */ if (board_type < GW_UNKNOWN) { diff --git a/board/gateworks/gw_ventana/ventana_eeprom.h b/board/gateworks/gw_ventana/ventana_eeprom.h index 434b604..5b065be 100644 --- a/board/gateworks/gw_ventana/ventana_eeprom.h +++ b/board/gateworks/gw_ventana/ventana_eeprom.h @@ -103,4 +103,15 @@ enum { EECONFIG_RES15, }; +enum { + GW54proto, /* original GW5400-A prototype */ + GW51xx, + GW52xx, + GW53xx, + GW54xx, + GW_UNKNOWN, +}; + +int read_eeprom(int bus, struct ventana_board_info *); + #endif |