diff options
Diffstat (limited to 'core/pci-quirk.c')
| -rw-r--r-- | core/pci-quirk.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/core/pci-quirk.c b/core/pci-quirk.c index 1b60e92..9832407 100644 --- a/core/pci-quirk.c +++ b/core/pci-quirk.c @@ -25,21 +25,6 @@ static void quirk_astbmc_vga(struct phb *phb __unused, struct dt_node *np = pd->dn; uint32_t revision, mcr_configuration, mcr_scu_mpll, mcr_scu_strap; - /* - * These accesses will only work if the BMC address 0x1E6E2180 is set - * to 0x7B, which is its default state on current systems. In future, - * for security purposes it is proposed to configure this register to - * disallow accesses from the host, and provide the properties that - * the Linux ast VGA driver used through the device tree instead. - * Here we set those properties so we can test how things would work - * if the window into BMC memory was closed. - * - * If both the petitboot kernel and the host kernel have an ast driver - * that reads properties from the device tree, setting 0x1E6E2180 to - * 0x79 will disable the backdoor into BMC memory and the only way the - * ast driver can operate is using the device tree properties. - */ - revision = ast_ahb_readl(SCU_REVISION_ID); mcr_configuration = ast_ahb_readl(MCR_CONFIGURATION); mcr_scu_mpll = ast_ahb_readl(MCR_SCU_MPLL); |