This patch is part of the qfw refactor work. This patch makes qemu_fwcfg_present() and qemu_fwcfg_dma_present() public functions.
Signed-off-by: Miao Yan yanmiaobest@gmail.com Reviewed-by: Bin Meng bmeng.cn@gmail.com --- cmd/qemu_fw_cfg.c | 37 ++++++++++++++++++++----------------- include/qemu_fw_cfg.h | 3 +++ 2 files changed, 23 insertions(+), 17 deletions(-)
diff --git a/cmd/qemu_fw_cfg.c b/cmd/qemu_fw_cfg.c index 9f03ab6..aab6b1a 100644 --- a/cmd/qemu_fw_cfg.c +++ b/cmd/qemu_fw_cfg.c @@ -62,23 +62,14 @@ static void qemu_fwcfg_read_entry_dma(uint16_t entry, __asm__ __volatile__ ("pause"); }
-static bool qemu_fwcfg_present(void) +bool qemu_fwcfg_present(void) { - uint32_t qemu; - - qemu_fwcfg_read_entry_pio(FW_CFG_SIGNATURE, 4, &qemu); - return be32_to_cpu(qemu) == QEMU_FW_CFG_SIGNATURE; + return fwcfg_present; }
-static bool qemu_fwcfg_dma_present(void) +bool qemu_fwcfg_dma_present(void) { - uint8_t dma_enabled; - - qemu_fwcfg_read_entry_pio(FW_CFG_ID, 1, &dma_enabled); - if (dma_enabled & FW_CFG_DMA_ENABLED) - return true; - - return false; + return fwcfg_dma_present; }
void qemu_fwcfg_read_entry(uint16_t entry, uint32_t length, void *address) @@ -257,9 +248,21 @@ static int qemu_fwcfg_list_firmware(void)
void qemu_fwcfg_init(void) { - fwcfg_present = qemu_fwcfg_present(); - if (fwcfg_present) - fwcfg_dma_present = qemu_fwcfg_dma_present(); + uint32_t qemu; + uint32_t dma_enabled; + + fwcfg_present = false; + fwcfg_dma_present = false; + + qemu_fwcfg_read_entry_pio(FW_CFG_SIGNATURE, 4, &qemu); + if (be32_to_cpu(qemu) == QEMU_FW_CFG_SIGNATURE) + fwcfg_present = true; + + if (fwcfg_present) { + qemu_fwcfg_read_entry_pio(FW_CFG_ID, 1, &dma_enabled); + if (dma_enabled & FW_CFG_DMA_ENABLED) + fwcfg_dma_present = true; + } }
static int qemu_fwcfg_do_list(cmd_tbl_t *cmdtp, int flag, @@ -323,7 +326,7 @@ static int do_qemu_fw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) int ret; cmd_tbl_t *fwcfg_cmd;
- if (!fwcfg_present) { + if (!qemu_fwcfg_present()) { printf("QEMU fw_cfg interface not found\n"); return CMD_RET_USAGE; } diff --git a/include/qemu_fw_cfg.h b/include/qemu_fw_cfg.h index 986f4b2..f718e09 100644 --- a/include/qemu_fw_cfg.h +++ b/include/qemu_fw_cfg.h @@ -167,4 +167,7 @@ struct fw_file *qemu_fwcfg_file_iter_init(struct fw_cfg_file_iter *iter); struct fw_file *qemu_fwcfg_file_iter_next(struct fw_cfg_file_iter *iter); bool qemu_fwcfg_file_iter_end(struct fw_cfg_file_iter *iter);
+bool qemu_fwcfg_present(void); +bool qemu_fwcfg_dma_present(void); + #endif