Re: [PATCHv4 15/15] Pass boot device list to firmware.

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On Sun, Nov 14, 2010 at 3:39 PM, Gleb Natapov <gleb@xxxxxxxxxx> wrote:
>
> Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
> ---
> Âhw/fw_cfg.c | Â 14 ++++++++++++++
> Âhw/fw_cfg.h | Â Â4 +++-
> Âsysemu.h  Â|  Â1 +
> Âvl.c    Â|  51 +++++++++++++++++++++++++++++++++++++++++++++++++++
> Â4 files changed, 69 insertions(+), 1 deletions(-)
>
> diff --git a/hw/fw_cfg.c b/hw/fw_cfg.c
> index 7b9434f..f6a67db 100644
> --- a/hw/fw_cfg.c
> +++ b/hw/fw_cfg.c
> @@ -53,6 +53,7 @@ struct FWCfgState {
> Â Â FWCfgFiles *files;
> Â Â uint16_t cur_entry;
> Â Â uint32_t cur_offset;
> + Â ÂNotifier machine_ready;
> Â};
>
> Âstatic void fw_cfg_write(FWCfgState *s, uint8_t value)
> @@ -315,6 +316,15 @@ int fw_cfg_add_file(FWCfgState *s, Âconst char *filename, uint8_t *data,
> Â Â return 1;
> Â}
>
> +static void fw_cfg_machine_ready(struct Notifier* n)
> +{
> + Â Âuint32_t len;
> + Â Âchar *bootindex = get_boot_devices_list(&len);
> +
> + Â Âfw_cfg_add_bytes(container_of(n, FWCfgState, machine_ready),
> + Â Â Â Â Â Â Â Â Â Â FW_CFG_BOOTINDEX, (uint8_t*)bootindex, len);
> +}
> +
> ÂFWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
> Â Â Â Â Â Â Â Â Â Â Â Â target_phys_addr_t ctl_addr, target_phys_addr_t data_addr)
> Â{
> @@ -343,6 +353,10 @@ FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
> Â Â fw_cfg_add_i16(s, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
> Â Â fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu);
>
> +
> + Â Âs->machine_ready.notify = fw_cfg_machine_ready;
> + Â Âqemu_add_machine_init_done_notifier(&s->machine_ready);
> +
> Â Â return s;
> Â}
>
> diff --git a/hw/fw_cfg.h b/hw/fw_cfg.h
> index 856bf91..4d61410 100644
> --- a/hw/fw_cfg.h
> +++ b/hw/fw_cfg.h
> @@ -30,7 +30,9 @@
>
> Â#define FW_CFG_FILE_FIRST Â Â Â 0x20
> Â#define FW_CFG_FILE_SLOTS Â Â Â 0x10
> -#define FW_CFG_MAX_ENTRY Â Â Â Â(FW_CFG_FILE_FIRST+FW_CFG_FILE_SLOTS)
> +#define FW_CFG_FILE_LAST_SLOT Â (FW_CFG_FILE_FIRST+FW_CFG_FILE_SLOTS)
> +#define FW_CFG_BOOTINDEX Â Â Â Â(FW_CFG_FILE_LAST_SLOT + 1)
> +#define FW_CFG_MAX_ENTRY Â Â Â ÂFW_CFG_BOOTINDEX

This should be
#define FW_CFG_MAX_ENTRY        (FW_CFG_BOOTINDEX + 1)
because the check is like this:
    if ((key & FW_CFG_ENTRY_MASK) >= FW_CFG_MAX_ENTRY) {
        s->cur_entry = FW_CFG_INVALID;

With that change, I got the bootindex passed to OpenBIOS:
OpenBIOS for Sparc64
Configuration device id QEMU version 1 machine id 0
kernel cmdline
CPUs: 1 x SUNW,UltraSPARC-IIi
UUID: 00000000-0000-0000-0000-000000000000
bootindex num_strings 1
bootindex /pbm@000001fe00000000/ide@5/drive@1/disk@0

The device path does not match exactly, but it's close:
/pci@1fe,0/pci-ata@5/ide1@600/disk@0
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