1 files changed, 132 insertions, 0 deletions

diff --git a/arch/x86/include/asm/olpc.h b/arch/x86/include/asm/olpc.h
new file mode 100644
index 00000000000..834a30295fa
--- /dev/null
+++ b/arch/x86/include/asm/olpc.h
@@ -0,0 +1,132 @@
+/* OLPC machine specific definitions */
+
+#ifndef _ASM_X86_OLPC_H
+#define _ASM_X86_OLPC_H
+
+#include <asm/geode.h>
+
+struct olpc_platform_t {
+        int flags;
+        uint32_t boardrev;
+        int ecver;
+};
+
+#define OLPC_F_PRESENT          0x01
+#define OLPC_F_DCON             0x02
+#define OLPC_F_VSA              0x04
+
+#ifdef CONFIG_OLPC
+
+extern struct olpc_platform_t olpc_platform_info;
+
+/*
+ * OLPC board IDs contain the major build number within the mask 0x0ff0,
+ * and the minor build number withing 0x000f.  Pre-builds have a minor
+ * number less than 8, and normal builds start at 8.  For example, 0x0B10
+ * is a PreB1, and 0x0C18 is a C1.
+ */
+
+static inline uint32_t olpc_board(uint8_t id)
+{
+        return (id << 4) | 0x8;
+}
+
+static inline uint32_t olpc_board_pre(uint8_t id)
+{
+        return id << 4;
+}
+
+static inline int machine_is_olpc(void)
+{
+        return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0;
+}
+
+/*
+ * The DCON is OLPC's Display Controller.  It has a number of unique
+ * features that we might want to take advantage of..
+ */
+static inline int olpc_has_dcon(void)
+{
+        return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0;
+}
+
+/*
+ * The VSA is software from AMD that typical Geode bioses will include.
+ * It is used to emulate the PCI bus, VGA, etc.  OLPC's Open Firmware does
+ * not include the VSA; instead, PCI is emulated by the kernel.
+ *
+ * The VSA is described further in arch/x86/pci/olpc.c.
+ */
+static inline int olpc_has_vsa(void)
+{
+        return (olpc_platform_info.flags & OLPC_F_VSA) ? 1 : 0;
+}
+
+/*
+ * The "Mass Production" version of OLPC's XO is identified as being model
+ * C2.  During the prototype phase, the following models (in chronological
+ * order) were created: A1, B1, B2, B3, B4, C1.  The A1 through B2 models
+ * were based on Geode GX CPUs, and models after that were based upon
+ * Geode LX CPUs.  There were also some hand-assembled models floating
+ * around, referred to as PreB1, PreB2, etc.
+ */
+static inline int olpc_board_at_least(uint32_t rev)
+{
+        return olpc_platform_info.boardrev >= rev;
+}
+
+#else
+
+static inline int machine_is_olpc(void)
+{
+        return 0;
+}
+
+static inline int olpc_has_dcon(void)
+{
+        return 0;
+}
+
+static inline int olpc_has_vsa(void)
+{
+        return 0;
+}
+
+#endif
+
+/* EC related functions */
+
+extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
+                unsigned char *outbuf, size_t outlen);
+
+extern int olpc_ec_mask_set(uint8_t bits);
+extern int olpc_ec_mask_unset(uint8_t bits);
+
+/* EC commands */
+
+#define EC_FIRMWARE_REV         0x08
+
+/* SCI source values */
+
+#define EC_SCI_SRC_EMPTY        0x00
+#define EC_SCI_SRC_GAME         0x01
+#define EC_SCI_SRC_BATTERY      0x02
+#define EC_SCI_SRC_BATSOC       0x04
+#define EC_SCI_SRC_BATERR       0x08
+#define EC_SCI_SRC_EBOOK        0x10
+#define EC_SCI_SRC_WLAN         0x20
+#define EC_SCI_SRC_ACPWR        0x40
+#define EC_SCI_SRC_ALL          0x7F
+
+/* GPIO assignments */
+
+#define OLPC_GPIO_MIC_AC        geode_gpio(1)
+#define OLPC_GPIO_DCON_IRQ      geode_gpio(7)
+#define OLPC_GPIO_THRM_ALRM     geode_gpio(10)
+#define OLPC_GPIO_SMB_CLK       geode_gpio(14)
+#define OLPC_GPIO_SMB_DATA      geode_gpio(15)
+#define OLPC_GPIO_WORKAUX       geode_gpio(24)
+#define OLPC_GPIO_LID           geode_gpio(26)
+#define OLPC_GPIO_ECSCI         geode_gpio(27)
+
+#endif /* _ASM_X86_OLPC_H */