diff options
| author | Philippe Mathieu-Daudé <philmd@redhat.com> | 2019-05-18 20:21:28 +0200 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@redhat.com> | 2019-07-02 02:31:13 +0200 |
| commit | 9ac45b886ac36937ff0969d63c5b819b4efaa337 (patch) | |
| tree | fc88d3172beeebe94d39fab0380d0311b43805cf | |
| parent | 1eb27d692ead211ff19667c5447fe9701c9fd992 (diff) | |
hw/block/pflash_cfi02: Document the current CFI values
Signed-off-by: Stephen Checkoway <stephen.checkoway@oberlin.edu>
Message-Id: <20190426162624.55977-6-stephen.checkoway@oberlin.edu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[PMD: Extracted from bigger patch]
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
| -rw-r--r-- | hw/block/pflash_cfi02.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c index 1a794fa83c..f1bac480f5 100644 --- a/hw/block/pflash_cfi02.c +++ b/hw/block/pflash_cfi02.c @@ -550,6 +550,7 @@ static void pflash_cfi02_realize(DeviceState *dev, Error **errp) pfl->wcycle = 0; pfl->cmd = 0; pfl->status = 0; + /* Hardcoded CFI table (mostly from SG29 Spansion flash) */ /* Standard "QRY" string */ pfl->cfi_table[0x10] = 'Q'; @@ -575,7 +576,7 @@ static void pflash_cfi02_realize(DeviceState *dev, Error **errp) pfl->cfi_table[0x1D] = 0x00; /* Vpp max (no Vpp pin) */ pfl->cfi_table[0x1E] = 0x00; - /* Reserved */ + /* Timeout per single byte/word write (128 ms) */ pfl->cfi_table[0x1F] = 0x07; /* Timeout for min size buffer write (NA) */ pfl->cfi_table[0x20] = 0x00; @@ -614,17 +615,25 @@ static void pflash_cfi02_realize(DeviceState *dev, Error **errp) pfl->cfi_table[0x32] = 'R'; pfl->cfi_table[0x33] = 'I'; + /* Extended version 1.0 */ pfl->cfi_table[0x34] = '1'; pfl->cfi_table[0x35] = '0'; + /* Address sensitive unlock required. */ pfl->cfi_table[0x36] = 0x00; + /* Erase suspend not supported. */ pfl->cfi_table[0x37] = 0x00; + /* Sector protect not supported. */ pfl->cfi_table[0x38] = 0x00; + /* Temporary sector unprotect not supported. */ pfl->cfi_table[0x39] = 0x00; + /* Sector protect/unprotect scheme. */ pfl->cfi_table[0x3a] = 0x00; + /* Simultaneous operation not supported. */ pfl->cfi_table[0x3b] = 0x00; + /* Burst mode not supported. */ pfl->cfi_table[0x3c] = 0x00; } |