diff options
| author | Inaky Perez-Gonzalez <inaky@linux.intel.com> | 2009-09-03 15:56:40 -0700 |
|---|---|---|
| committer | Inaky Perez-Gonzalez <inaky@linux.intel.com> | 2009-10-19 15:55:52 +0900 |
| commit | 32742e6158657f19ad31653705bef56d983508e7 (patch) | |
| tree | 05a13b990dac551c18e1fd468ca1383b86f40e0c /drivers/net/wimax/i2400m | |
| parent | 59bdc4be0b819173a8f840fc11ccb82d6f2ca64b (diff) | |
wimax/i2400m: decide properly if using signed vs non-signed firmware loading
The i2400m based devices can boot two main types of firmware images:
signed and non-signed. Signed images have signature data included that
must match that of a certificate stored in the device.
Currently the code is making the decission on what type of firmware
load (signed vs non-signed) is going to be loaded based on a hardcoded
decission in __i2400m_ack_verify(), based on the barker the device
sent upon boot.
This is not flexible enough as future hardware will emit more barkers;
thus the bit has to be set in a place where there is better knowledge
of what is going on. This will be done in follow-up commits -- however
this patch paves the way for it.
So the querying of the mode is packed into i2400m_boot_is_signed();
the main changes are just using i2400m_boot_is_signed() to determine
the method to follow and setting i2400m->sboot in
i2400m_is_boot_barker(). The modifications in i2400m_dnload_init() and
i2400m_dnload_finalize() are just reorganizing the order of the if
blocks and thus look larger than they really are.
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Diffstat (limited to 'drivers/net/wimax/i2400m')
| -rw-r--r-- | drivers/net/wimax/i2400m/fw.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/net/wimax/i2400m/fw.c b/drivers/net/wimax/i2400m/fw.c index 92d4d605dc2..c962a8d8df7 100644 --- a/drivers/net/wimax/i2400m/fw.c +++ b/drivers/net/wimax/i2400m/fw.c @@ -509,6 +509,17 @@ error_send: /* + * Indicate if the device emitted a reboot barker that indicates + * "signed boot" + */ +static +unsigned i2400m_boot_is_signed(struct i2400m *i2400m) +{ + return likely(i2400m->sboot); +} + + +/* * Do the final steps of uploading firmware * * Depending on the boot mode (signed vs non-signed), different @@ -529,7 +540,7 @@ int i2400m_dnload_finalize(struct i2400m *i2400m, d_fnstart(3, dev, "offset %zu\n", offset); cmd = (void *) bcf + offset; - if (i2400m->sboot == 0) { + if (i2400m_boot_is_signed(i2400m) == 0) { struct i2400m_bootrom_header jump_ack; d_printf(1, dev, "unsecure boot, jumping to 0x%08x\n", le32_to_cpu(cmd->target_addr)); @@ -846,28 +857,24 @@ int i2400m_dnload_init(struct i2400m *i2400m, const struct i2400m_bcf_hdr *bcf) { int result; struct device *dev = i2400m_dev(i2400m); - u32 module_id = le32_to_cpu(bcf->module_id); - if (i2400m->sboot == 0 - && (module_id & I2400M_BCF_MOD_ID_POKES) == 0) { - /* non-signed boot process without pokes */ - result = i2400m_dnload_init_nonsigned(i2400m); + if (i2400m_boot_is_signed(i2400m)) { + d_printf(1, dev, "signed boot\n"); + result = i2400m_dnload_init_signed(i2400m, bcf); if (result == -ERESTARTSYS) return result; if (result < 0) - dev_err(dev, "fw %s: non-signed download " + dev_err(dev, "firmware %s: signed boot download " "initialization failed: %d\n", i2400m->fw_name, result); - } else if (i2400m->sboot == 0 - && (module_id & I2400M_BCF_MOD_ID_POKES)) { - /* non-signed boot process with pokes, nothing to do */ - result = 0; - } else { /* signed boot process */ - result = i2400m_dnload_init_signed(i2400m, bcf); + } else { + /* non-signed boot process without pokes */ + d_printf(1, dev, "non-signed boot\n"); + result = i2400m_dnload_init_nonsigned(i2400m); if (result == -ERESTARTSYS) return result; if (result < 0) - dev_err(dev, "fw %s: signed boot download " + dev_err(dev, "firmware %s: non-signed download " "initialization failed: %d\n", i2400m->fw_name, result); } |