From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: qemu-devel@nongnu.org
Cc: "Aurelien Jarno" <aurelien@aurel32.net>,
"Aleksandar Rikalo" <aleksandar.rikalo@syrmia.com>,
"Huacai Chen" <chenhuacai@kernel.org>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>
Subject: [PATCH 07/18] hw/pci-host/bonito: Make BONPONCFG register read-only
Date: Thu, 31 Dec 2020 23:49:00 +0100 [thread overview]
Message-ID: <20201231224911.1467352-8-f4bug@amsat.org> (raw)
In-Reply-To: <20201231224911.1467352-1-f4bug@amsat.org>
Per the datasheet (Chapter 5.2. "Power-on settable configuration
register - bonponcfg"), the bonponcfg can only be modified using
"pull-up on the corresponding IOD0-15 signal". Do not allow
update of this register by the CPU.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
hw/pci-host/bonito.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/pci-host/bonito.c b/hw/pci-host/bonito.c
index 93820f69e49..29c0294d289 100644
--- a/hw/pci-host/bonito.c
+++ b/hw/pci-host/bonito.c
@@ -251,7 +251,6 @@ static void bonito_writel(void *opaque, hwaddr addr,
DPRINTF("bonito_writel "TARGET_FMT_plx" val %lx saddr %x\n",
addr, val, saddr);
switch (saddr) {
- case BONITO_BONPONCFG:
case BONITO_IODEVCFG:
case BONITO_SDCFG:
case BONITO_PCIMAP:
@@ -292,6 +291,7 @@ static void bonito_writel(void *opaque, hwaddr addr,
s->regs[BONITO_INTENCLR] = val;
s->regs[BONITO_INTEN] &= ~val;
break;
+ case BONITO_BONPONCFG:
case BONITO_INTEN:
case BONITO_INTISR:
DPRINTF("write to readonly bonito register %x\n", saddr);
--
2.26.2
next prev parent reply other threads:[~2020-12-31 22:53 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-31 22:48 [PATCH 00/18] hw/pci-host/bonito: Remap PCI "lo" regions when PCIMAP reg is modified Philippe Mathieu-Daudé
2020-12-31 22:48 ` [PATCH 01/18] hw/pci-host/bonito: Remove unused definitions Philippe Mathieu-Daudé
2021-01-03 1:37 ` Huacai Chen
2020-12-31 22:48 ` [PATCH 02/18] hw/pci-host/bonito: Display hexadecimal value with '0x' prefix Philippe Mathieu-Daudé
2021-01-03 1:38 ` Huacai Chen
2020-12-31 22:48 ` [PATCH 03/18] hw/pci-host/bonito: Use PCI_DEVFN() macro Philippe Mathieu-Daudé
2021-01-03 1:38 ` Huacai Chen
2020-12-31 22:48 ` [PATCH 04/18] hw/pci-host/bonito: Use pci_config_set_interrupt_pin() Philippe Mathieu-Daudé
2021-01-03 1:39 ` Huacai Chen
2020-12-31 22:48 ` [PATCH 05/18] hw/pci-host/bonito: Simplify soft reset using FIELD_EX32() Philippe Mathieu-Daudé
2020-12-31 22:48 ` [RFC PATCH 06/18] hw/pci-host/bonito: Do not allow big-endian targets Philippe Mathieu-Daudé
2020-12-31 22:49 ` Philippe Mathieu-Daudé [this message]
2020-12-31 22:49 ` [RFC PATCH 08/18] hw/pci-host/bonito: Remap PCI "lo" regions when PCIMAP reg is modified Philippe Mathieu-Daudé
2020-12-31 22:49 ` [PATCH 09/18] hw/pci-host/bonito: Rename north bridge helpers Philippe Mathieu-Daudé
2020-12-31 22:49 ` [PATCH 10/18] hw/pci-host/bonito: Rename PCI host helpers Philippe Mathieu-Daudé
2020-12-31 22:49 ` [PATCH 11/18] hw/pci-host/bonito: Rename PCI function helpers Philippe Mathieu-Daudé
2020-12-31 22:49 ` [PATCH 12/18] hw/pci-host/bonito: Rename PCIBonitoState -> BonitoPciState Philippe Mathieu-Daudé
2020-12-31 22:49 ` [PATCH 13/18] hw/pci-host/bonito: Create PCI regions in bonito_host_realize() Philippe Mathieu-Daudé
2020-12-31 22:49 ` [RFC PATCH 14/18] hw/pci-host/bonito: Simplify using pci_host_conf_le_ops MemoryRegionOps Philippe Mathieu-Daudé
2020-12-31 22:49 ` [PATCH 15/18] hw/pci-host/bonito: Map north bridge region in bonito_host_realize() Philippe Mathieu-Daudé
2020-12-31 22:49 ` [PATCH 16/18] hw/pci-host/bonito: Create TYPE_PCI_BONITO " Philippe Mathieu-Daudé
2020-12-31 22:49 ` [PATCH 17/18] hw/pci-host/bonito: Declare TYPE_BONITO_PCI_HOST_BRIDGE in include/ Philippe Mathieu-Daudé
2020-12-31 22:49 ` [RFC PATCH 18/18] hw/mips/fuloong2e: Inline bonito_init() Philippe Mathieu-Daudé
2021-01-03 13:52 ` [PATCH 00/18] hw/pci-host/bonito: Remap PCI "lo" regions when PCIMAP reg is modified Philippe Mathieu-Daudé
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