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author | Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at> | 2011-07-01 00:39:09 +0000 |
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committer | Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at> | 2011-07-01 00:39:09 +0000 |
commit | e27b2d41841c3b48b168cde6b2ba531e5238414a (patch) | |
tree | 8234faaf6e3128bc26a4c68de43d79a5243e4385 /ichspi.c | |
parent | ccd92a19d41322d160298427600f1d1302a934a5 (diff) | |
download | flashrom-e27b2d41841c3b48b168cde6b2ba531e5238414a.tar.gz flashrom-e27b2d41841c3b48b168cde6b2ba531e5238414a.tar.bz2 flashrom-e27b2d41841c3b48b168cde6b2ba531e5238414a.zip |
ichspi.c: simplify ich_set_bbar
Less code, documenting better what the differences are (i.e. offset of BBAR only).
Corresponding to flashrom svn r1360.
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Diffstat (limited to 'ichspi.c')
-rw-r--r-- | ichspi.c | 48 |
1 files changed, 21 insertions, 27 deletions
@@ -555,43 +555,37 @@ static int program_opcodes(OPCODES *op, int enable_undo) * Try to set BBAR (BIOS Base Address Register), but read back the value in case * it didn't stick. */ -void ich_set_bbar(uint32_t minaddr) +static void ich_set_bbar(uint32_t min_addr) { - minaddr &= BBAR_MASK; + int bbar_off; switch (spi_programmer->type) { case SPI_CONTROLLER_ICH7: case SPI_CONTROLLER_VIA: - ichspi_bbar = mmio_readl(ich_spibar + 0x50) & ~BBAR_MASK; - if (ichspi_bbar) - msg_pdbg("Reserved bits in BBAR not zero: 0x%04x", - ichspi_bbar); - ichspi_bbar |= minaddr; - rmmio_writel(ichspi_bbar, ich_spibar + 0x50); - ichspi_bbar = mmio_readl(ich_spibar + 0x50); - /* We don't have any option except complaining. And if the write - * failed, the restore will fail as well, so no problem there. - */ - if (ichspi_bbar != minaddr) - msg_perr("Setting BBAR failed!\n"); + bbar_off = 0x50; break; case SPI_CONTROLLER_ICH9: - ichspi_bbar = mmio_readl(ich_spibar + ICH9_REG_BBAR) & ~BBAR_MASK; - if (ichspi_bbar) - msg_pdbg("Reserved bits in BBAR not zero: 0x%04x", - ichspi_bbar); - ichspi_bbar |= minaddr; - rmmio_writel(ichspi_bbar, ich_spibar + ICH9_REG_BBAR); - ichspi_bbar = mmio_readl(ich_spibar + ICH9_REG_BBAR); - /* We don't have any option except complaining. And if the write - * failed, the restore will fail as well, so no problem there. - */ - if (ichspi_bbar != minaddr) - msg_perr("Setting BBAR failed!\n"); + bbar_off = ICH9_REG_BBAR; break; default: msg_perr("Unknown chipset for BBAR setting!\n"); - break; + return; + } + + ichspi_bbar = mmio_readl(ich_spibar + bbar_off) & ~BBAR_MASK; + if (ichspi_bbar) { + msg_pdbg("Reserved bits in BBAR not zero: 0x%08x\n", + ichspi_bbar); } + min_addr &= BBAR_MASK; + ichspi_bbar |= min_addr; + rmmio_writel(ichspi_bbar, ich_spibar + bbar_off); + ichspi_bbar = mmio_readl(ich_spibar + bbar_off) & BBAR_MASK; + + /* We don't have any option except complaining. And if the write + * failed, the restore will fail as well, so no problem there. + */ + if (ichspi_bbar != min_addr) + msg_perr("Setting BBAR failed!\n"); } /* This function generates OPCODES from or programs OPCODES to ICH according to |