From 0b4082442aa526d387a80cb5872d78670e6b468b Mon Sep 17 00:00:00 2001 From: Vadim Bendebury Date: Tue, 11 Nov 2014 07:17:24 -0800 Subject: [PATCH] spi: do not use malloc in Winbond driver When the driver is included in bootblock, malloc() is not available. Come to think of it, it is perfectly fine to use a statically allocated structure for the SPI device descriptor - coreboot is unlikely to require concurrent support of multiple SPI devices of the same kind. BRANCH=none BUG=chrome-os-partner:31438 TEST=bootblock on the FPGA board recognizes the installed Winbond device: coreboot-4.0 bootblock Tue Nov 11 07:27:24 PST 2014 starting... SF: Detected W25Q16 with page size 1000, total 200000 Change-Id: Iaa69d610ef18e69b1ae5ade2d958f9fe1595a723 Signed-off-by: Vadim Bendebury Reviewed-on: https://chromium-review.googlesource.com/228959 Reviewed-by: Aaron Durbin --- src/drivers/spi/winbond.c | 31 +++++++++++++------------------ 1 file changed, 13 insertions(+), 18 deletions(-) diff --git a/src/drivers/spi/winbond.c b/src/drivers/spi/winbond.c index 54bfca43c2..a0abeb4ef0 100644 --- a/src/drivers/spi/winbond.c +++ b/src/drivers/spi/winbond.c @@ -184,11 +184,12 @@ static int winbond_erase(struct spi_flash *flash, u32 offset, size_t len) return spi_flash_cmd_erase(flash, CMD_W25_SE, offset, len); } +static struct winbond_spi_flash stm; + struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode) { const struct winbond_spi_flash_params *params; unsigned page_size; - struct winbond_spi_flash *stm; unsigned int i; for (i = 0; i < ARRAY_SIZE(winbond_spi_flash_table); i++) { @@ -203,31 +204,25 @@ struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode) return NULL; } - stm = malloc(sizeof(struct winbond_spi_flash)); - if (!stm) { - printk(BIOS_WARNING, "SF: Failed to allocate memory\n"); - return NULL; - } - - stm->params = params; - stm->flash.spi = spi; - stm->flash.name = params->name; + stm.params = params; + stm.flash.spi = spi; + stm.flash.name = params->name; /* Assuming power-of-two page size initially. */ page_size = 1 << params->l2_page_size; - stm->flash.write = winbond_write; - stm->flash.erase = winbond_erase; + stm.flash.write = winbond_write; + stm.flash.erase = winbond_erase; #if CONFIG_SPI_FLASH_NO_FAST_READ - stm->flash.read = spi_flash_cmd_read_slow; + stm.flash.read = spi_flash_cmd_read_slow; #else - stm->flash.read = spi_flash_cmd_read_fast; + stm.flash.read = spi_flash_cmd_read_fast; #endif - stm->flash.sector_size = (1 << stm->params->l2_page_size) * - stm->params->pages_per_sector; - stm->flash.size = page_size * params->pages_per_sector + stm.flash.sector_size = (1 << stm.params->l2_page_size) * + stm.params->pages_per_sector; + stm.flash.size = page_size * params->pages_per_sector * params->sectors_per_block * params->nr_blocks; - return &stm->flash; + return &stm.flash; }