From c445b4fc773296be525123eb472ea27ac807339f Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Thu, 31 Mar 2016 17:27:05 -0700 Subject: chromeos: Simplify fill_lb_gpios even further A long time ago many Chrome OS boards had pages full of duplicated boilerplate code for the fill_lb_gpios() function, and we spent a lot of time bikeshedding a proper solution that passes a table of lb_gpio structs which can be concisely written with a static struct initializer in http://crosreview.com/234648. Unfortunately we never really finished that patch and in the mean time a different solution using the fill_lb_gpio() helper got standardized onto most boards. Still, that solution is not quite as clean and concise as the one we had already designed, and it also wasn't applied consistently to all recent boards (causing more boards with bad code to get added afterwards). This patch switches all boards newer than Link to the better solution and also adds some nicer debug output for the GPIOs while I'm there. If more boards need to be converted from fill_lb_gpio() to this model later (e.g. from a branch), it's quite easy to do with: s/fill_lb_gpio(gpio++,\n\?\s*\([^,]*\),\n\?\s*\([^,]*\),\n\?\s*\([^,]*\),\n\?\s*\([^,]*\));/\t{\1, \2, \4, \3},/ Based on a patch by Furquan Shaikh . BUG=None BRANCH=None TEST=Booted on Oak. Ran abuild -x. Change-Id: I449974d1c75c8ed187f5e10935495b2f03725811 Signed-off-by: Julius Werner Reviewed-on: https://review.coreboot.org/14226 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks --- src/lib/coreboot_table.c | 42 ++++++++++++++++++++++++++++++++++-------- 1 file changed, 34 insertions(+), 8 deletions(-) (limited to 'src/lib') diff --git a/src/lib/coreboot_table.c b/src/lib/coreboot_table.c index 0cfb8ace8a..eeed65e744 100644 --- a/src/lib/coreboot_table.c +++ b/src/lib/coreboot_table.c @@ -148,27 +148,53 @@ void __attribute__((weak)) lb_framebuffer(struct lb_header *header) #endif } -void fill_lb_gpio(struct lb_gpio *gpio, int num, - int polarity, const char *name, int value) +void lb_add_gpios(struct lb_gpios *gpios, const struct lb_gpio *gpio_table, + size_t count) { - memset(gpio, 0, sizeof(*gpio)); - gpio->port = num; - gpio->polarity = polarity; - if (value >= 0) - gpio->value = value; - strncpy((char *)gpio->name, name, GPIO_MAX_NAME_LENGTH); + size_t table_size = count * sizeof(struct lb_gpio); + + memcpy(&gpios->gpios[gpios->count], gpio_table, table_size); + gpios->count += count; + gpios->size += table_size; } #if CONFIG_CHROMEOS static void lb_gpios(struct lb_header *header) { struct lb_gpios *gpios; + struct lb_gpio *g; gpios = (struct lb_gpios *)lb_new_record(header); gpios->tag = LB_TAG_GPIO; gpios->size = sizeof(*gpios); gpios->count = 0; fill_lb_gpios(gpios); + + printk(BIOS_INFO, "Passing %u GPIOs to payload:\n" + " NAME | PORT | POLARITY | VALUE\n", + gpios->count); + for (g = &gpios->gpios[0]; g < &gpios->gpios[gpios->count]; g++) { + printk(BIOS_INFO, "%16s | ", g->name); + if (g->port == -1) + printk(BIOS_INFO, " undefined | "); + else + printk(BIOS_INFO, "%#.8x | ", g->port); + if (g->polarity == ACTIVE_HIGH) + printk(BIOS_INFO, " high | "); + else + printk(BIOS_INFO, " low | "); + switch (g->value) { + case 0: + printk(BIOS_INFO, " high\n"); + break; + case 1: + printk(BIOS_INFO, " low\n"); + break; + default: + printk(BIOS_INFO, "undefined\n"); + break; + } + } } static void lb_vdat(struct lb_header *header) -- cgit v1.2.3