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https://github.com/openwrt/openwrt.git
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132 lines
3.3 KiB
Diff
132 lines
3.3 KiB
Diff
From f9ab44c271fbd82a5702b6ba067fa90e33a30089 Mon Sep 17 00:00:00 2001
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From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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Date: Wed, 7 Nov 2012 15:29:27 +0100
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Subject: sf: add malloc-free probe functions dedicated for SPL
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Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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--- a/drivers/mtd/spi/spi_flash.c
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+++ b/drivers/mtd/spi/spi_flash.c
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@@ -339,11 +339,11 @@ static struct {
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DECLARE_GLOBAL_DATA_PTR;
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#endif
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-struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
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- unsigned int max_hz, unsigned int spi_mode)
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+int spi_flash_probe_spl(struct spi_flash *flash, unsigned int bus,
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+ unsigned int cs, unsigned int max_hz,
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+ unsigned int spi_mode)
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{
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struct spi_slave *spi;
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- struct spi_flash *flash;
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int ret, i, shift;
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u8 idcode[IDCODE_LEN], *idp;
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#ifdef CONFIG_NEEDS_MANUAL_RELOC
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@@ -359,8 +359,8 @@ struct spi_flash *spi_flash_probe(unsign
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spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
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if (!spi) {
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- printf("SF: Failed to set up slave\n");
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- return NULL;
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+ debug("SF: Failed to set up slave\n");
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+ return -1;
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}
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ret = spi_claim_bus(spi);
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@@ -379,13 +379,6 @@ struct spi_flash *spi_flash_probe(unsign
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print_buffer(0, idcode, 1, sizeof(idcode), 0);
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#endif
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- flash = malloc(sizeof(*flash));
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- if (!flash) {
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- debug("SF: failed to alloc memory\n");
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- goto err_malloc;
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- }
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-
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- memset(flash, 0, sizeof(*flash));
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flash->spi = spi;
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/* count the number of continuation bytes */
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@@ -404,30 +397,58 @@ struct spi_flash *spi_flash_probe(unsign
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}
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if (ret <= 0) {
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- printf("SF: Unsupported manufacturer %02x\n", *idp);
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+ debug("SF: Unsupported manufacturer %02x\n", *idp);
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goto err_manufacturer_probe;
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}
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- printf("SF: Detected %s with page size ", flash->name);
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- print_size(flash->sector_size, ", total ");
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- print_size(flash->size, "\n");
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-
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spi_release_bus(spi);
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- return flash;
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+ return 0;
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err_manufacturer_probe:
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- free(flash);
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-err_malloc:
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err_read_id:
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spi_release_bus(spi);
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err_claim_bus:
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spi_free_slave(spi);
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+
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+ return ret;
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+}
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+
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+struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
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+ unsigned int max_hz, unsigned int spi_mode)
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+{
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+ struct spi_flash *flash;
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+ int ret;
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+
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+ flash = malloc(sizeof(*flash));
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+ if (!flash) {
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+ debug("SF: Failed to malloc spi_flash\n");
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+ return NULL;
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+ }
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+ memset(flash, 0, sizeof(*flash));
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+
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+ ret = spi_flash_probe_spl(flash, bus, cs, max_hz, spi_mode);
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+ if (ret)
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+ goto err_probe;
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+
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+ printf("SF: %s, page size ", flash->name);
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+ print_size(flash->sector_size, ", total ");
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+ print_size(flash->size, "\n");
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+
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+ return flash;
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+
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+err_probe:
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+ free(flash);
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return NULL;
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}
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-void spi_flash_free(struct spi_flash *flash)
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+void spi_flash_free_spl(struct spi_flash *flash)
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{
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spi_free_slave(flash->spi);
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+}
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+
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+void spi_flash_free(struct spi_flash *flash)
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+{
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+ spi_flash_free_spl(flash);
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free(flash);
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}
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--- a/include/spi_flash.h
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+++ b/include/spi_flash.h
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@@ -52,6 +52,11 @@ struct spi_flash *spi_flash_probe(unsign
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unsigned int max_hz, unsigned int spi_mode);
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void spi_flash_free(struct spi_flash *flash);
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+int spi_flash_probe_spl(struct spi_flash *flash, unsigned int bus,
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+ unsigned int cs, unsigned int max_hz,
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+ unsigned int spi_mode);
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+void spi_flash_free_spl(struct spi_flash *flash);
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+
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static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
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size_t len, void *buf)
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{
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