Author: stefanct Date: Sun Sep 18 17:15:31 2011 New Revision: 1449 URL: http://flashrom.org/trac/flashrom/changeset/1449
Log: ichspi: inform the user about the consequences of the security override strap
Ibex Peak SPI Programming Guide: The PCH has a mechanism to set up to 5 address ranges from HOST access. These are defined in PR0, PR1, PR2, PR3 and PR4 in the PCH EDS. These address ranges are NOT unlocked by assertion of Flash descriptor Override.
Also, the datasheets mention the bit in their description of FRAP but not PR[N].
Signed-off-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at Acked-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net
Modified: trunk/ichspi.c
Modified: trunk/ichspi.c ============================================================================== --- trunk/ichspi.c Sun Sep 18 02:41:33 2011 (r1448) +++ trunk/ichspi.c Sun Sep 18 17:15:31 2011 (r1449) @@ -1325,6 +1325,12 @@ } if (tmp2 & HSFS_FDV) ichspi_desc = 1; + if (!(tmp2 & HSFS_FDOPSS) && ichspi_desc) + msg_pinfo("The Flash Descriptor Security Override " + "Strap-Pin is set. Restrictions implied\n" + "by the FRAP and FREG registers are NOT in " + "effect. Please note that Protected\n" + "Range (PR) restrictions still apply.\n");
tmp2 = mmio_readw(ich_spibar + ICH9_REG_HSFC); msg_pdbg("0x06: 0x%04x (HSFC)\n", tmp2);