driver/mtd/spi:Read 8KB data chunk during u-boot load in SPL
PATCH v2 6/10 driver/mtd/spi:Read 8KB data chunk during u-boot load in SPL
SPI driver perform its operation(read/write) on 64KB buffer chunk for data greater than 64KB. This buffer chunk is allocated from system heap.
During SPL boot, 768KB of data is read from SPI flash.
Here, heap size may not be sufficient enough to full-fill 64KB buffer requirement of SPI driver. So break down u-boot read operation at 8KB of chunk.
Also, fix a warning i.e. "unused variable buf" during CONFIG_FSL_CORENET
Signed-off-by Prabhakar Kushwaha <[email protected]>
---
Please note currently SPI boot is taking 20sec time. Fix will be sent separately to fix it.
Changes for v2: Sending as it is.
drivers/mtd/spi/fsl_espi_spl.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-)
drivers/mtd/spi/fsl_espi_spl.c +12 -3
@@ -20,8 +20,10 @@void spi_boot (void ) {void (*uboot)(void )__noreturn ; -u32 offset, code_len; +u32 offset, code_len, copy_len =0 ; +#ifndef CONFIG_FSL_CORENET unsigned char *buf =NULL ; +#endif struct spi_flash *flash; flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
@@ -56,8 +58,15 @@ void spi_boot(void) code_len = code_len -CONFIG_SPL_MAX_SIZE ;#endif /* copy code to DDR */ -spi_flash_read (flash, offset, code_len, - (void *)CONFIG_SYS_SPI_FLASH_U_BOOT_DST ); +printf ("Loading second stage boot loader " ); +while (copy_len <= code_len) { +spi_flash_read (flash, offset + copy_len,0x2000 , + (void *)(CONFIG_SYS_SPI_FLASH_U_BOOT_DST + + copy_len)); + copy_len = copy_len +0x2000 ; +putc ('.' ); + } +/* * Jump to U-Boot image */
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1.7.9.5